# Changelog

All notable changes to this project will be documented in this file.

## [4.2.1] - 2023-10-10

### Added

- Add redirection on `/deck` URLs for logged-out users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27128))
- Add support for v4.2.0 migrations to `tootctl maintenance fix-duplicates` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27147))

### Changed

- Change some worker lock TTLs to be shorter-lived ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27246))
- Change user archive export allowed period from 7 days to 6 days ([suddjian](https://github.com/mastodon/mastodon/pull/27200))

### Fixed

- Fix duplicate reports being sent when reporting some remote posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27355))
- Fix clicking on already-opened thread post scrolling to the top of the thread ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27331), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/27338), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/27350))
- Fix some remote posts getting truncated ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27307))
- Fix some cases of infinite scroll code trying to fetch inaccessible posts in a loop ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27286))
- Fix `Vary` headers not being set on some redirects ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27272))
- Fix mentions being matched in some URL query strings ([mjankowski](https://github.com/mastodon/mastodon/pull/25656))
- Fix unexpected linebreak in version string in the Web UI ([vmstan](https://github.com/mastodon/mastodon/pull/26986))
- Fix double scroll bars in some columns in advanced interface ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27187))
- Fix boosts of local users being filtered in account timelines ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27204))
- Fix multiple instances of the trend refresh scheduler sometimes running at once ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27253))
- Fix importer returning negative row estimates ([jgillich](https://github.com/mastodon/mastodon/pull/27258))
- Fix incorrectly keeping outdated update notices absent from the API endpoint ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27021))
- Fix import progress not updating on certain failures ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27247))
- Fix websocket connections being incorrectly decremented twice on errors ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/27238))
- Fix explore prompt appearing because of posts being received out of order ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27211))
- Fix explore prompt sometimes showing up when the home TL is loading ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27062))
- Fix link handling of mentions in user profiles when logged out ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27185))
- Fix filtering audit log for entries about disabling 2FA ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27186))
- Fix notification toasts not respecting reduce-motion ([c960657](https://github.com/mastodon/mastodon/pull/27178))
- Fix retention dashboard not displaying correct month ([vmstan](https://github.com/mastodon/mastodon/pull/27180))
- Fix tIME chunk not being properly removed from PNG uploads ([TheEssem](https://github.com/mastodon/mastodon/pull/27111))
- Fix division by zero in video in bitrate computation code ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27129))
- Fix inefficient queries in “Follows and followers” as well as several admin pages ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27116), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/27306))
- Fix ActiveRecord using two connection pools when no replica is defined ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/27061))
- Fix the search documentation URL in system checks ([renchap](https://github.com/mastodon/mastodon/pull/27036))

## [4.2.0] - 2023-09-21

The following changelog entries focus on changes visible to users, administrators, client developers or federated software developers, but there has also been a lot of code modernization, refactoring, and tooling work, in particular by [@danielmbrasil](https://github.com/danielmbrasil), [@mjankowski](https://github.com/mjankowski), [@nschonni](https://github.com/nschonni), [@renchap](https://github.com/renchap), and [@takayamaki](https://github.com/takayamaki).

### Added

- **Add full-text search of opted-in public posts and rework search operators** ([Gargron](https://github.com/mastodon/mastodon/pull/26485), [jsgoldstein](https://github.com/mastodon/mastodon/pull/26344), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26657), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26650), [jsgoldstein](https://github.com/mastodon/mastodon/pull/26659), [Gargron](https://github.com/mastodon/mastodon/pull/26660), [Gargron](https://github.com/mastodon/mastodon/pull/26663), [Gargron](https://github.com/mastodon/mastodon/pull/26688), [Gargron](https://github.com/mastodon/mastodon/pull/26689), [Gargron](https://github.com/mastodon/mastodon/pull/26686), [Gargron](https://github.com/mastodon/mastodon/pull/26687), [Gargron](https://github.com/mastodon/mastodon/pull/26692), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26697), [Gargron](https://github.com/mastodon/mastodon/pull/26699), [Gargron](https://github.com/mastodon/mastodon/pull/26701), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26710), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26739), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26754), [Gargron](https://github.com/mastodon/mastodon/pull/26662), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26755), [Gargron](https://github.com/mastodon/mastodon/pull/26781), [Gargron](https://github.com/mastodon/mastodon/pull/26782), [Gargron](https://github.com/mastodon/mastodon/pull/26760), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26756), [Gargron](https://github.com/mastodon/mastodon/pull/26784), [Gargron](https://github.com/mastodon/mastodon/pull/26807), [Gargron](https://github.com/mastodon/mastodon/pull/26835), [Gargron](https://github.com/mastodon/mastodon/pull/26847), [Gargron](https://github.com/mastodon/mastodon/pull/26834), [arbolitoloco1](https://github.com/mastodon/mastodon/pull/26893), [tribela](https://github.com/mastodon/mastodon/pull/26896), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26927), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26959), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/27014))
  This introduces a new `public_statuses` Elasticsearch index for public posts by users who have opted in to their posts being searchable (`toot#indexable` flag).
  This also revisits the other indexes to provide more useful indexing, and adds new search operators such as `from:me`, `before:2022-11-01`, `after:2022-11-01`, `during:2022-11-01`, `language:fr`, `has:poll`, or `in:library` (for searching only in posts you have written or interacted with).
  Results are now ordered chronologically.
- **Add admin notifications for new Mastodon versions** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26582))
  This is done by querying `https://api.joinmastodon.org/update-check` every 30 minutes in a background job.
  That URL can be changed using the `UPDATE_CHECK_URL` environment variable, and the feature outright disabled by setting that variable to an empty string (`UPDATE_CHECK_URL=`).
- **Add “Privacy and reach” tab in profile settings** ([Gargron](https://github.com/mastodon/mastodon/pull/26484), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26508))
  This reorganized scattered privacy and reach settings to a single place, as well as improve their wording.
- **Add display of out-of-band hashtags in the web interface** ([Gargron](https://github.com/mastodon/mastodon/pull/26492), [arbolitoloco1](https://github.com/mastodon/mastodon/pull/26497), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26506), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26525), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26606), [Gargron](https://github.com/mastodon/mastodon/pull/26666), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26960))
- **Add role badges to the web interface** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25649), [Gargron](https://github.com/mastodon/mastodon/pull/26281))
- **Add ability to pick domains to forward reports to using the `forward_to_domains` parameter in `POST /api/v1/reports`** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25866), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26636))
  The `forward_to_domains` REST API parameter is a list of strings. If it is empty or omitted, the previous behavior is maintained.
  The `forward` parameter still needs to be set for `forward_to_domains` to be taken into account.
  The forwarded-to domains can only include that of the original author and people being replied to.
- **Add forwarding of reported replies to servers being replied to** ([Gargron](https://github.com/mastodon/mastodon/pull/25341), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26189))
- Add `ONE_CLICK_SSO_LOGIN` environment variable to directly link to the Single-Sign On provider if there is only one sign up method available ([CSDUMMI](https://github.com/mastodon/mastodon/pull/26083), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26368), [CSDUMMI](https://github.com/mastodon/mastodon/pull/26857), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26901))
- **Add webhook templating** ([Gargron](https://github.com/mastodon/mastodon/pull/23289))
- **Add webhooks for local `status.created`, `status.updated`, `account.updated` and `report.updated`** ([VyrCossont](https://github.com/mastodon/mastodon/pull/24133), [VyrCossont](https://github.com/mastodon/mastodon/pull/24243), [VyrCossont](https://github.com/mastodon/mastodon/pull/24211))
- **Add exclusive lists** ([dariusk, necropolina](https://github.com/mastodon/mastodon/pull/22048), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25324))
- **Add a confirmation screen when suspending a domain** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25144), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25603))
- **Add support for importing lists** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25203), [mgmn](https://github.com/mastodon/mastodon/pull/26120), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26372))
- **Add optional hCaptcha support** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25019), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25057), [Gargron](https://github.com/mastodon/mastodon/pull/25395), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26388))
- **Add lines to threads in web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/24549), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24677), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24696), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24711), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24714), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24713), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24715), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24800), [teeerevor](https://github.com/mastodon/mastodon/pull/25706), [renchap](https://github.com/mastodon/mastodon/pull/25807))
- **Add new onboarding flow to web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/24619), [Gargron](https://github.com/mastodon/mastodon/pull/24646), [Gargron](https://github.com/mastodon/mastodon/pull/24705), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24872), [ThisIsMissEm](https://github.com/mastodon/mastodon/pull/24883), [Gargron](https://github.com/mastodon/mastodon/pull/24954), [stevenjlm](https://github.com/mastodon/mastodon/pull/24959), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25010), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25275), [Gargron](https://github.com/mastodon/mastodon/pull/25559), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25561))
- **Add auto-refresh of accounts we get new messages/edits of** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26510))
- **Add Elasticsearch cluster health check and indexes mismatch check to dashboard** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26448), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26605), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26658))
- Add `hide_collections`, `discoverable` and `indexable` attributes to credentials API ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26998))
- Add `S3_ENABLE_CHECKSUM_MODE` environment variable to enable checksum verification on compatible S3-providers ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26435))
- Add admin API for managing tags ([rrgeorge](https://github.com/mastodon/mastodon/pull/26872))
- Add a link to hashtag timelines from the Trending hashtags moderation interface ([gunchleoc](https://github.com/mastodon/mastodon/pull/26724))
- Add timezone to datetimes in e-mails ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26822))
- Add `authorized_fetch` server setting in addition to env var ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25798), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26958))
- Add avatar image to webfinger responses ([tvler](https://github.com/mastodon/mastodon/pull/26558))
- Add debug logging on signature verification failure ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26637), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26812))
- Add explicit error messages when DeepL quota is exceeded ([lutoma](https://github.com/mastodon/mastodon/pull/26704))
- Add Elasticsearch/OpenSearch version to “Software” in admin dashboard ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26652))
- Add `data-nosnippet` attribute to remote posts and local posts with `noindex` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26648))
- Add support for federating `memorial` attribute ([rrgeorge](https://github.com/mastodon/mastodon/pull/26583))
- Add Cherokee and Kalmyk to languages dropdown ([gunchleoc](https://github.com/mastodon/mastodon/pull/26012), [gunchleoc](https://github.com/mastodon/mastodon/pull/26013))
- Add `DELETE /api/v1/profile/avatar` and `DELETE /api/v1/profile/header` to the REST API ([danielmbrasil](https://github.com/mastodon/mastodon/pull/25124), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26573))
- Add `ES_PRESET` option to customize numbers of shards and replicas ([Gargron](https://github.com/mastodon/mastodon/pull/26483), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26489))
  This can have a value of `single_node_cluster` (default), `small_cluster` (uses one replica) or `large_cluster` (uses one replica and a higher number of shards).
- Add `CACHE_BUSTER_HTTP_METHOD` environment variable ([renchap](https://github.com/mastodon/mastodon/pull/26528), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26542))
- Add support for `DB_PASS` when using `DATABASE_URL` ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26295))
- Add `GET /api/v1/instance/languages` to REST API ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24443))
- Add primary key to `preview_cards_statuses` join table ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25243), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26384), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26447), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26737), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26979))
- Add client-side timeout on resend confirmation button ([Gargron](https://github.com/mastodon/mastodon/pull/26300))
- Add published date and author to news on the explore screen in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26155))
- Add `lang` attribute to various UI components ([c960657](https://github.com/mastodon/mastodon/pull/23869), [c960657](https://github.com/mastodon/mastodon/pull/23891), [c960657](https://github.com/mastodon/mastodon/pull/26111), [c960657](https://github.com/mastodon/mastodon/pull/26149))
- Add stricter protocol fields validation for accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25937))
- Add support for Azure blob storage ([mistydemeo](https://github.com/mastodon/mastodon/pull/23607), [mistydemeo](https://github.com/mastodon/mastodon/pull/26080))
- Add toast with option to open post after publishing in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25564), [Signez](https://github.com/mastodon/mastodon/pull/25919), [Gargron](https://github.com/mastodon/mastodon/pull/26664))
- Add canonical link tags in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25715))
- Add button to see results for polls in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25726))
- Add at-symbol prepended to mention span title ([forsamori](https://github.com/mastodon/mastodon/pull/25684))
- Add users index on `unconfirmed_email` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25672), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25702))
- Add superapp index on `oauth_applications` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25670))
- Add index to backups on `user_id` column ([mjankowski](https://github.com/mastodon/mastodon/pull/25647))
- Add onboarding prompt when home feed too slow in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25267), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25556), [Gargron](https://github.com/mastodon/mastodon/pull/25579), [renchap](https://github.com/mastodon/mastodon/pull/25580), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25581), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25617), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25917), [Gargron](https://github.com/mastodon/mastodon/pull/26829), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26935))
- Add `POST /api/v1/conversations/:id/unread` API endpoint to mark a conversation as unread ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25509))
- Add `translate="no"` to outgoing mentions and links ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25524))
- Add unsubscribe link and headers to e-mails ([Gargron](https://github.com/mastodon/mastodon/pull/25378), [c960657](https://github.com/mastodon/mastodon/pull/26085))
- Add logging of websocket send errors ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/25280))
- Add time zone preference ([Gargron](https://github.com/mastodon/mastodon/pull/25342), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26025))
- Add `legal` as report category ([Gargron](https://github.com/mastodon/mastodon/pull/23941), [renchap](https://github.com/mastodon/mastodon/pull/25400), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26509))
- Add `data-nosnippet` so Google doesn't use trending posts in snippets for `/` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25279))
- Add card with who invited you to join when displaying rules on sign-up ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23475))
- Add missing primary keys to `accounts_tags` and `statuses_tags` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25210))
- Add support for custom sign-up URLs ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25014), [renchap](https://github.com/mastodon/mastodon/pull/25108), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25190), [mgmn](https://github.com/mastodon/mastodon/pull/25531))
  This is set using `SSO_ACCOUNT_SIGN_UP` and reflected in the REST API by adding `registrations.sign_up_url` to the `/api/v2/instance` endpoint.
- Add polling and automatic redirection to `/start` on email confirmation ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25013))
- Add ability to block sign-ups from IP using the CLI ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24870))
- Add ALT badges to media that has alternative text in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24782), [c960657](https://github.com/mastodon/mastodon/pull/26166)
- Add ability to include accounts with pending follow requests in lists ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19727), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24810))
- Add trend management to admin API ([rrgeorge](https://github.com/mastodon/mastodon/pull/24257))
  - `POST /api/v1/admin/trends/statuses/:id/approve`
  - `POST /api/v1/admin/trends/statuses/:id/reject`
  - `POST /api/v1/admin/trends/links/:id/approve`
  - `POST /api/v1/admin/trends/links/:id/reject`
  - `POST /api/v1/admin/trends/tags/:id/approve`
  - `POST /api/v1/admin/trends/tags/:id/reject`
  - `GET /api/v1/admin/trends/links/publishers`
  - `POST /api/v1/admin/trends/links/publishers/:id/approve`
  - `POST /api/v1/admin/trends/links/publishers/:id/reject`
- Add user handle to notification mail recipient address ([HeitorMC](https://github.com/mastodon/mastodon/pull/24240))
- Add progress indicator to sign-up flow ([Gargron](https://github.com/mastodon/mastodon/pull/24545))
- Add client-side validation for taken username in sign-up form ([Gargron](https://github.com/mastodon/mastodon/pull/24546))
- Add `--approve` option to `tootctl accounts create` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24533))
- Add “In Memoriam” banner back to profiles ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23591), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23614))
  This adds the `memorial` attribute to the `Account` REST API entity.
- Add colour to follow button when hashtag is being followed ([c960657](https://github.com/mastodon/mastodon/pull/24361))
- Add further explanations to the profile link verification instructions ([drzax](https://github.com/mastodon/mastodon/pull/19723))
- Add a link to Identity provider's account settings from the account settings ([CSDUMMI](https://github.com/mastodon/mastodon/pull/24100), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24628))
- Add support for streaming server to connect to postgres with self-signed certs through the `sslmode` URL parameter ([ramuuns](https://github.com/mastodon/mastodon/pull/21431))
- Add support for specifying S3 storage classes through the `S3_STORAGE_CLASS` environment variable ([hyl](https://github.com/mastodon/mastodon/pull/22480))
- Add support for incoming rich text ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23913))
- Add support for Ruby 3.2 ([tenderlove](https://github.com/mastodon/mastodon/pull/22928), [casperisfine](https://github.com/mastodon/mastodon/pull/24142), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24202), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26934))
- Add API parameter to safeguard unexpected mentions in new posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18350))

### Changed

- **Change hashtags to be displayed separately when they are the last line of a post** ([renchap](https://github.com/mastodon/mastodon/pull/26499), [renchap](https://github.com/mastodon/mastodon/pull/26614), [renchap](https://github.com/mastodon/mastodon/pull/26615))
- **Change reblogs to be excluded from "Posts and replies" tab in web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/26302))
- **Change interaction modal in web interface** ([Gargron, ClearlyClaire](https://github.com/mastodon/mastodon/pull/26075), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26269), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26268), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26267), [mgmn](https://github.com/mastodon/mastodon/pull/26459), [tribela](https://github.com/mastodon/mastodon/pull/26461), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26593), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26795))
- **Change design of link previews in web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/26136), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26151), [Gargron](https://github.com/mastodon/mastodon/pull/26153), [Gargron](https://github.com/mastodon/mastodon/pull/26250), [Gargron](https://github.com/mastodon/mastodon/pull/26287), [Gargron](https://github.com/mastodon/mastodon/pull/26286), [c960657](https://github.com/mastodon/mastodon/pull/26184))
- **Change "direct message" nomenclature to "private mention" in web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/24248))
- **Change translation feature to cover Content Warnings, poll options and media descriptions** ([c960657](https://github.com/mastodon/mastodon/pull/24175), [S-H-GAMELINKS](https://github.com/mastodon/mastodon/pull/25251), [c960657](https://github.com/mastodon/mastodon/pull/26168), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26452))
- **Change account search to match by text when opted-in** ([jsgoldstein](https://github.com/mastodon/mastodon/pull/25599), [Gargron](https://github.com/mastodon/mastodon/pull/26378))
- **Change import feature to be clearer, less error-prone and more reliable** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21054), [mgmn](https://github.com/mastodon/mastodon/pull/24874))
- **Change local and federated timelines to be tabs of a single “Live feeds” column** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25641), [Gargron](https://github.com/mastodon/mastodon/pull/25683), [mgmn](https://github.com/mastodon/mastodon/pull/25694), [Plastikmensch](https://github.com/mastodon/mastodon/pull/26247), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26633))
- **Change user archive export to be faster and more reliable, and export `.zip` archives instead of `.tar.gz` ones** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23360), [TheEssem](https://github.com/mastodon/mastodon/pull/25034))
- **Change `mastodon-streaming` systemd unit files to be templated** ([e-nomem](https://github.com/mastodon/mastodon/pull/24751))
- **Change `statsd` integration to disable sidekiq metrics by default** ([mjankowski](https://github.com/mastodon/mastodon/pull/25265), [mjankowski](https://github.com/mastodon/mastodon/pull/25336), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26310))
  This deprecates `statsd` support and disables the sidekiq integration unless `STATSD_SIDEKIQ` is set to `true`.
  This is because the `nsa` gem is unmaintained, and its sidekiq integration is known to add very significant overhead.
  Later versions of Mastodon will have other ways to get the same metrics.
- **Change replica support to native Rails adapter** ([krainboltgreene](https://github.com/mastodon/mastodon/pull/25693), [Gargron](https://github.com/mastodon/mastodon/pull/25849), [Gargron](https://github.com/mastodon/mastodon/pull/25874), [Gargron](https://github.com/mastodon/mastodon/pull/25851), [Gargron](https://github.com/mastodon/mastodon/pull/25977), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26074), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26326), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26386), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26856))
  This is a breaking change, dropping `makara` support, and requiring you to update your database configuration if you are using replicas.
  To tell Mastodon to use a read replica, you can either set the `REPLICA_DB_NAME` environment variable (along with `REPLICA_DB_USER`, `REPLICA_DB_PASS`, `REPLICA_DB_HOST`, and `REPLICA_DB_PORT`, if they differ from the primary database), or the `REPLICA_DATABASE_URL` environment variable if your configuration is based on `DATABASE_URL`.
- Change DCT method used for JPEG encoding to float ([electroCutie](https://github.com/mastodon/mastodon/pull/26675))
- Change from `node-redis` to `ioredis` for streaming ([gmemstr](https://github.com/mastodon/mastodon/pull/26581))
- Change private statuses index to index without crutches ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26713))
- Change video compression parameters ([Gargron](https://github.com/mastodon/mastodon/pull/26631), [Gargron](https://github.com/mastodon/mastodon/pull/26745), [Gargron](https://github.com/mastodon/mastodon/pull/26766), [Gargron](https://github.com/mastodon/mastodon/pull/26970))
- Change admin e-mail notification settings to be their own settings group ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26596))
- Change opacity of the delete icon in the search field to be more visible ([AntoninDelFabbro](https://github.com/mastodon/mastodon/pull/26449))
- Change Account Search to prioritize username over display name ([jsgoldstein](https://github.com/mastodon/mastodon/pull/26623))
- Change follow recommendation materialized view to be faster in most cases ([renchap, ClearlyClaire](https://github.com/mastodon/mastodon/pull/26545))
- Change `robots.txt` to block GPTBot ([Foritus](https://github.com/mastodon/mastodon/pull/26396))
- Change header of hashtag timelines in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26362), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26416))
- Change streaming `/metrics` to include additional metrics ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26299), [ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26945))
- Change indexing frequency from 5 minutes to 1 minute, add locks to schedulers ([Gargron](https://github.com/mastodon/mastodon/pull/26304))
- Change column link to add a better keyboard focus indicator ([teeerevor](https://github.com/mastodon/mastodon/pull/26278))
- Change poll form element colors to fit with the rest of the ui ([teeerevor](https://github.com/mastodon/mastodon/pull/26139), [teeerevor](https://github.com/mastodon/mastodon/pull/26162), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26164))
- Change 'favourite' to 'favorite' for American English ([marekr](https://github.com/mastodon/mastodon/pull/24667), [gunchleoc](https://github.com/mastodon/mastodon/pull/26009), [nabijaczleweli](https://github.com/mastodon/mastodon/pull/26109))
- Change ActivityStreams representation of suspended accounts to not use a blank `name` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25276))
- Change focus UI for keyboard only input ([teeerevor](https://github.com/mastodon/mastodon/pull/25935), [Gargron](https://github.com/mastodon/mastodon/pull/26125), [Gargron](https://github.com/mastodon/mastodon/pull/26767))
- Change thread view to scroll to the selected post rather than the post being replied to ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24685))
- Change links in multi-column mode so tabs are open in single-column mode ([Signez](https://github.com/mastodon/mastodon/pull/25893), [Signez](https://github.com/mastodon/mastodon/pull/26070), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25973), [Signez](https://github.com/mastodon/mastodon/pull/26019), [Signez](https://github.com/mastodon/mastodon/pull/26759))
- Change searching with `#` to include account index ([jsgoldstein](https://github.com/mastodon/mastodon/pull/25638))
- Change label and design of sensitive and unavailable media in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25712), [Gargron](https://github.com/mastodon/mastodon/pull/26135), [Gargron](https://github.com/mastodon/mastodon/pull/26330))
- Change button colors to increase hover/focus contrast and consistency ([teeerevor](https://github.com/mastodon/mastodon/pull/25677), [Gargron](https://github.com/mastodon/mastodon/pull/25679))
- Change dropdown icon above compose form from ellipsis to bars in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25661))
- Change header backgrounds to use fewer different colors in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25577))
- Change files to be deleted in batches instead of one-by-one ([Gargron](https://github.com/mastodon/mastodon/pull/23302), [S-H-GAMELINKS](https://github.com/mastodon/mastodon/pull/25586), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25587))
- Change emoji picker icon ([iparr](https://github.com/mastodon/mastodon/pull/25479))
- Change edit profile page ([Gargron](https://github.com/mastodon/mastodon/pull/25413), [c960657](https://github.com/mastodon/mastodon/pull/26538))
- Change "bot" label to "automated" ([Gargron](https://github.com/mastodon/mastodon/pull/25356))
- Change design of dropdowns in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25107))
- Change wording of “Content cache retention period” setting to highlight destructive implications ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23261))
- Change autolinking to allow carets in URL search params ([renchap](https://github.com/mastodon/mastodon/pull/25216))
- Change share action from being in action bar to being in dropdown in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25105))
- Change sessions to be ordered from most-recent to least-recently updated ([frankieroberto](https://github.com/mastodon/mastodon/pull/25005))
- Change vacuum scheduler to also delete expired tokens and unused application records ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24868), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24871))
- Change "Sign in" to "Login" ([Gargron](https://github.com/mastodon/mastodon/pull/24942))
- Change domain suspensions to also be checked before trying to fetch unknown remote resources ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24535))
- Change media components to use aspect-ratio rather than compute height themselves ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24686), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24943), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26801))
- Change logo version in header based on screen size in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24707))
- Change label from "For you" to "People" on explore screen in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24706))
- Change logged-out WebUI HTML pages to be cached for a few seconds ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24708))
- Change unauthenticated responses to be cached in REST API ([Gargron](https://github.com/mastodon/mastodon/pull/24348), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24662), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24665))
- Change HTTP caching logic ([Gargron](https://github.com/mastodon/mastodon/pull/24347), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24604))
- Change hashtags and mentions in bios to open in-app in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24643))
- Change styling of the recommended accounts to allow bio to be more visible ([chike00](https://github.com/mastodon/mastodon/pull/24480))
- Change account search in moderation interface to allow searching by username including the leading `@` ([HeitorMC](https://github.com/mastodon/mastodon/pull/24242))
- Change all components to use the same error page in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24512))
- Change search pop-out in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24305))
- Change user settings to be stored in a more optimal way ([Gargron](https://github.com/mastodon/mastodon/pull/23630), [c960657](https://github.com/mastodon/mastodon/pull/24321), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24453), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24460), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24558), [Gargron](https://github.com/mastodon/mastodon/pull/24761), [Gargron](https://github.com/mastodon/mastodon/pull/24783), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25508), [jsgoldstein](https://github.com/mastodon/mastodon/pull/25340), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26884), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/27012))
- Change media upload limits and remove client-side resizing ([Gargron](https://github.com/mastodon/mastodon/pull/23726))
- Change design of account rows in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24247), [Gargron](https://github.com/mastodon/mastodon/pull/24343), [Gargron](https://github.com/mastodon/mastodon/pull/24956), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25131))
- Change log-out to use Single Logout when using external log-in through OIDC ([CSDUMMI](https://github.com/mastodon/mastodon/pull/24020))
- Change sidekiq-bulk's batch size from 10,000 to 1,000 jobs in one Redis call ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24034))
- Change translation to only be offered for supported languages ([c960657](https://github.com/mastodon/mastodon/pull/23879), [c960657](https://github.com/mastodon/mastodon/pull/24037))
  This adds the `/api/v1/instance/translation_languages` REST API endpoint that returns an object with the supported translation language pairs in the form:
  ```json
  {
    "fr": ["en", "de"]
  }
  ```
  (where `fr` is a supported source language and `en` and `de` or supported output language when translating a `fr` string)
- Change compose form checkbox to native input with `appearance: none` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22949))
- Change posts' clickable area to be larger ([c960657](https://github.com/mastodon/mastodon/pull/23621))
- Change `followed_by` link to `location=all` if account is local on /admin/accounts/:id page ([tribela](https://github.com/mastodon/mastodon/pull/23467))

### Removed

- **Remove support for Node.js 14** ([renchap](https://github.com/mastodon/mastodon/pull/25198))
- **Remove support for Ruby 2.7** ([nschonni](https://github.com/mastodon/mastodon/pull/24237))
- **Remove clustering from streaming API** ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/24655))
- **Remove anonymous access to the streaming API** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23989))
- Remove obfuscation of reply count in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26768))
- Remove `kmr` from language selection, as it was a duplicate for `ku` ([gunchleoc](https://github.com/mastodon/mastodon/pull/26014), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26787))
- Remove 16:9 cropping from web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26132))
- Remove back button from bookmarks, favourites and lists screens in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26126))
- Remove display name input from sign-up form ([Gargron](https://github.com/mastodon/mastodon/pull/24704))
- Remove `tai` locale ([c960657](https://github.com/mastodon/mastodon/pull/23880))
- Remove empty Kushubian (csb) local files ([nschonni](https://github.com/mastodon/mastodon/pull/24151))
- Remove `Permissions-Policy` header from all responses ([Gargron](https://github.com/mastodon/mastodon/pull/24124))

### Fixed

- **Fix filters not being applying in the explore page** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25887))
- **Fix being unable to load past a full page of filtered posts in Home timeline** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24930))
- **Fix log-in flow when involving both OAuth and external authentication** ([CSDUMMI](https://github.com/mastodon/mastodon/pull/24073))
- **Fix broken links in account gallery** ([c960657](https://github.com/mastodon/mastodon/pull/24218))
- **Fix migration handler not updating lists** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24808))
- Fix crash when viewing a moderation appeal and the moderator account has been deleted ([xrobau](https://github.com/mastodon/mastodon/pull/25900))
- Fix error in Web UI when server rules cannot be fetched ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26957))
- Fix paragraph margins resulting in irregular read-more cut-off in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26828))
- Fix notification permissions being requested immediately after login ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26472))
- Fix performances of profile directory ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26840), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26842))
- Fix mute button and volume slider feeling disconnected in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26827), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26860))
- Fix “Scoped order is ignored, it's forced to be batch order.” warnings ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26793))
- Fix blocked domain appearing in account feeds ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26823))
- Fix invalid `Content-Type` header for WebP images ([c960657](https://github.com/mastodon/mastodon/pull/26773))
- Fix minor inefficiencies in `tootctl search deploy` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26721))
- Fix filter form in profiles directory overflowing instead of wrapping ([arbolitoloco1](https://github.com/mastodon/mastodon/pull/26682))
- Fix sign up steps progress layout in right-to-left locales ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26728))
- Fix bug with “favorited by” and “reblogged by“ view on posts only showing up to 40 items ([timothyjrogers](https://github.com/mastodon/mastodon/pull/26577), [timothyjrogers](https://github.com/mastodon/mastodon/pull/26574))
- Fix bad search type heuristic ([Gargron](https://github.com/mastodon/mastodon/pull/26673))
- Fix not being able to negate prefix clauses in search ([Gargron](https://github.com/mastodon/mastodon/pull/26672))
- Fix timeout on invalid set of exclusionary parameters in `/api/v1/timelines/public` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/26239))
- Fix adding column with default value taking longer on Postgres >= 11 ([Gargron](https://github.com/mastodon/mastodon/pull/26375))
- Fix light theme select option for hashtags ([teeerevor](https://github.com/mastodon/mastodon/pull/26311))
- Fix AVIF attachments ([c960657](https://github.com/mastodon/mastodon/pull/26264))
- Fix incorrect URL normalization when fetching remote resources ([c960657](https://github.com/mastodon/mastodon/pull/26219), [c960657](https://github.com/mastodon/mastodon/pull/26285))
- Fix being unable to filter posts for individual Chinese languages ([gunchleoc](https://github.com/mastodon/mastodon/pull/26066))
- Fix preview card sometimes linking to 4xx error pages ([c960657](https://github.com/mastodon/mastodon/pull/26200))
- Fix emoji picker button scrolling with textarea content in single-column view ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25304))
- Fix missing border on error screen in light theme in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/26152))
- Fix UI overlap with the loupe icon in the Explore Tab ([gol-cha](https://github.com/mastodon/mastodon/pull/26113))
- Fix unexpected redirection to `/explore` after sign-in ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26143))
- Fix `/api/v1/statuses/:id/unfavourite` and `/api/v1/statuses/:id/unreblog` returning non-updated counts ([c960657](https://github.com/mastodon/mastodon/pull/24365))
- Fix clicking the “Back” button sometimes leading out of Mastodon ([c960657](https://github.com/mastodon/mastodon/pull/23953), [CSFlorin](https://github.com/mastodon/mastodon/pull/24835), [S-H-GAMELINKS](https://github.com/mastodon/mastodon/pull/24867), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25281))
- Fix processing of `null` ActivityPub activities ([tribela](https://github.com/mastodon/mastodon/pull/26021))
- Fix hashtag posts not being removed from home feed on hashtag unfollow ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26028))
- Fix for "follows you" indicator in light web UI not readable ([vmstan](https://github.com/mastodon/mastodon/pull/25993))
- Fix incorrect line break between icon and number of reposts & favourites ([edent](https://github.com/mastodon/mastodon/pull/26004))
- Fix sounds not being loaded from assets host ([Signez](https://github.com/mastodon/mastodon/pull/25931))
- Fix buttons showing inconsistent styles ([teeerevor](https://github.com/mastodon/mastodon/pull/25903), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25965), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26341), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/26482))
- Fix trend calculation working on too many items at a time ([Gargron](https://github.com/mastodon/mastodon/pull/25835))
- Fix dropdowns being disabled for logged out users in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25714), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25964))
- Fix explore page being inaccessible when opted-out of trends in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25716))
- Fix re-activated accounts possibly getting deleted by `AccountDeletionWorker` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25711))
- Fix `/api/v2/search` not working with following query param ([danielmbrasil](https://github.com/mastodon/mastodon/pull/25681))
- Fix inefficient query when requesting a new confirmation email from a logged-in account ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25669))
- Fix unnecessary concurrent calls to `/api/*/instance` in web UI ([mgmn](https://github.com/mastodon/mastodon/pull/25663))
- Fix resolving local URL for remote content ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25637))
- Fix search not being easily findable on smaller screens in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25576), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25631))
- Fix j/k keyboard shortcuts on some status lists ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25554))
- Fix missing validation on `default_privacy` setting ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25513))
- Fix incorrect pagination headers in `/api/v2/admin/accounts` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/25477))
- Fix non-interactive upload container being given a `button` role and tabIndex ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25462))
- Fix always redirecting to onboarding in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/25396))
- Fix inconsistent use of middle dot (·) instead of bullet (•) to separate items ([j-f1](https://github.com/mastodon/mastodon/pull/25248))
- Fix spacing of middle dots in the detailed status meta section ([j-f1](https://github.com/mastodon/mastodon/pull/25247))
- Fix prev/next buttons color in media viewer ([renchap](https://github.com/mastodon/mastodon/pull/25231))
- Fix email addresses not being properly updated in `tootctl maintenance fix-duplicates` ([mjankowski](https://github.com/mastodon/mastodon/pull/25118))
- Fix unicode surrogate pairs sometimes being broken in page title ([eai04191](https://github.com/mastodon/mastodon/pull/25148))
- Fix various inefficient queries against account domains ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25126))
- Fix video player offering to expand in a lightbox when it's in an `iframe` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25067))
- Fix post embed previews ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25071))
- Fix inadequate error handling in several API controllers when given invalid parameters ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24947), [danielmbrasil](https://github.com/mastodon/mastodon/pull/24958), [danielmbrasil](https://github.com/mastodon/mastodon/pull/25063), [danielmbrasil](https://github.com/mastodon/mastodon/pull/25072), [danielmbrasil](https://github.com/mastodon/mastodon/pull/25386), [danielmbrasil](https://github.com/mastodon/mastodon/pull/25595))
- Fix uncaught `ActiveRecord::StatementInvalid` in Mastodon::IpBlocksCLI ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24861))
- Fix various edge cases with local moves ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24812))
- Fix `tootctl accounts cull` crashing when encountering a domain resolving to a private address ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23378))
- Fix `tootctl accounts approve --number N` not aproving the N earliest registrations ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24605))
- Fix being unable to clear media description when editing posts ([c960657](https://github.com/mastodon/mastodon/pull/24720))
- Fix unavailable translations not falling back to English ([mgmn](https://github.com/mastodon/mastodon/pull/24727))
- Fix anonymous visitors getting a session cookie on first visit ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24584), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24650), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24664))
- Fix cutting off first letter of hashtag links sometimes in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/24623))
- Fix crash in `tootctl accounts create --reattach --force` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24557), [danielmbrasil](https://github.com/mastodon/mastodon/pull/24680))
- Fix characters being emojified even when using Variation Selector 15 (text) ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20949), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24615))
- Fix uncaught ActiveRecord::StatementInvalid exception in `Mastodon::AccountsCLI#approve` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24590))
- Fix email confirmation skip option in `tootctl accounts modify USERNAME --email EMAIL --confirm` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24578))
- Fix tooltip for dates without time ([c960657](https://github.com/mastodon/mastodon/pull/24244))
- Fix missing loading spinner and loading more on scroll in Private Mentions column ([c960657](https://github.com/mastodon/mastodon/pull/24446))
- Fix account header image missing from `/settings/profile` on narrow screens ([c960657](https://github.com/mastodon/mastodon/pull/24433))
- Fix height of announcements not being updated when using reduced animations ([c960657](https://github.com/mastodon/mastodon/pull/24354))
- Fix inconsistent radius in advanced interface drawer ([thislight](https://github.com/mastodon/mastodon/pull/24407))
- Fix loading more trending posts on scroll in the advanced interface ([OmmyZhang](https://github.com/mastodon/mastodon/pull/24314))
- Fix poll ending notification for edited polls ([c960657](https://github.com/mastodon/mastodon/pull/24311))
- Fix max width of media in `/about` and `/privacy-policy` ([mgmn](https://github.com/mastodon/mastodon/pull/24180))
- Fix streaming API not being usable without `DATABASE_URL` ([Gargron](https://github.com/mastodon/mastodon/pull/23960))
- Fix external authentication not running onboarding code for new users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23458))

## [4.1.8] - 2023-09-19

### Fixed

- Fix post edits not being forwarded as expected ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26936))
- Fix moderator rights inconsistencies ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26729))
- Fix crash when encountering invalid URL ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26814))
- Fix cached posts including stale stats ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26409))
- Fix uploading of video files for which `ffprobe` reports `0/0` average framerate ([NicolaiSoeborg](https://github.com/mastodon/mastodon/pull/26500))
- Fix unexpected audio stream transcoding when uploaded video is eligible to passthrough ([yufushiro](https://github.com/mastodon/mastodon/pull/26608))

### Security

- Fix missing HTML sanitization in translation API (CVE-2023-42452, [GHSA-2693-xr3m-jhqr](https://github.com/mastodon/mastodon/security/advisories/GHSA-2693-xr3m-jhqr))
- Fix incorrect domain name normalization (CVE-2023-42451, [GHSA-v3xf-c9qf-j667](https://github.com/mastodon/mastodon/security/advisories/GHSA-v3xf-c9qf-j667))

## [4.1.7] - 2023-09-05

### Changed

- Change remote report processing to accept reports with long comments, but truncate them ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/25028))

### Fixed

- **Fix blocking subdomains of an already-blocked domain** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26392))
- Fix `/api/v1/timelines/tag/:hashtag` allowing for unauthenticated access when public preview is disabled ([danielmbrasil](https://github.com/mastodon/mastodon/pull/26237))
- Fix inefficiencies in `PlainTextFormatter` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26727))

## [4.1.6] - 2023-07-31

### Fixed

- Fix memory leak in streaming server ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26228))
- Fix wrong filters sometimes applying in streaming ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26159), [ThisIsMissEm](https://github.com/mastodon/mastodon/pull/26213), [renchap](https://github.com/mastodon/mastodon/pull/26233))
- Fix incorrect connect timeout in outgoing requests ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26116))

## [4.1.5] - 2023-07-21

### Added

- Add check preventing Sidekiq workers from running with Makara configured ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25850))

### Changed

- Change request timeout handling to use a longer deadline ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26055))

### Fixed

- Fix moderation interface for remote instances with a .zip TLD ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25885))
- Fix remote accounts being possibly persisted to database with incomplete protocol values ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25886))
- Fix trending publishers table not rendering correctly on narrow screens ([vmstan](https://github.com/mastodon/mastodon/pull/25945))

### Security

- Fix CSP headers being unintentionally wide ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26105))

## [4.1.4] - 2023-07-07

### Fixed

- Fix branding:generate_app_icons failing because of disallowed ICO coder ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25794))
- Fix crash in admin interface when viewing a remote user with verified links ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25796))
- Fix processing of media files with unusual names ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25788))

## [4.1.3] - 2023-07-06

### Added

- Add fallback redirection when getting a webfinger query `LOCAL_DOMAIN@LOCAL_DOMAIN` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23600))

### Changed

- Change OpenGraph-based embeds to allow fullscreen ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25058))
- Change AccessTokensVacuum to also delete expired tokens ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24868))
- Change profile updates to be sent to recently-mentioned servers ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24852))
- Change automatic post deletion thresholds and load detection ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24614))
- Change `/api/v1/statuses/:id/history` to always return at least one item ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25510))
- Change auto-linking to allow carets in URL query params ([renchap](https://github.com/mastodon/mastodon/pull/25216))

### Removed

- Remove invalid `X-Frame-Options: ALLOWALL` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25070))

### Fixed

- Fix wrong view being displayed when a webhook fails validation ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25464))
- Fix soft-deleted post cleanup scheduler overwhelming the streaming server ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/25519))
- Fix incorrect pagination headers in `/api/v2/admin/accounts` ([danielmbrasil](https://github.com/mastodon/mastodon/pull/25477))
- Fix multiple inefficiencies in automatic post cleanup worker ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24607), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24785), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24840))
- Fix performance of streaming by parsing message JSON once ([ThisIsMissEm](https://github.com/mastodon/mastodon/pull/25278), [ThisIsMissEm](https://github.com/mastodon/mastodon/pull/25361))
- Fix CSP headers when `S3_ALIAS_HOST` includes a path component ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25273))
- Fix `tootctl accounts approve --number N` not approving N earliest registrations ([danielmbrasil](https://github.com/mastodon/mastodon/pull/24605))
- Fix reports not being closed when performing batch suspensions ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24988))
- Fix being able to vote on your own polls ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25015))
- Fix race condition when reblogging a status ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25016))
- Fix “Authorized applications” inefficiently and incorrectly getting last use date ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25060))
- Fix “Authorized applications” crashing when listing apps with certain admin API scopes ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25713))
- Fix multiple N+1s in ConversationsController ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25134), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25399), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/25499))
- Fix user archive takeouts when using OpenStack Swift ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24431))
- Fix searching for remote content by URL not working under certain conditions ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25637))
- Fix inefficiencies in indexing content for search ([VyrCossont](https://github.com/mastodon/mastodon/pull/24285), [VyrCossont](https://github.com/mastodon/mastodon/pull/24342))

### Security

- Add finer permission requirements for managing webhooks ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25463))
- Update dependencies
- Add hardening headers for user-uploaded files ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/25756))
- Fix verified links possibly hiding important parts of the URL (CVE-2023-36462)
- Fix timeout handling of outbound HTTP requests (CVE-2023-36461)
- Fix arbitrary file creation through media processing (CVE-2023-36460)
- Fix possible XSS in preview cards (CVE-2023-36459)

## [4.1.2] - 2023-04-04

### Fixed

- Fix crash in `tootctl` commands making use of parallelization when Elasticsearch is enabled ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24182), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/24377))
- Fix crash in `db:setup` when Elasticsearch is enabled ([rrgeorge](https://github.com/mastodon/mastodon/pull/24302))
- Fix user archive takeout when using OpenStack Swift or S3 providers with no ACL support ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24200))
- Fix invalid/expired invites being processed on sign-up ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24337))

### Security

- Update Ruby to 3.0.6 due to ReDoS vulnerabilities ([saizai](https://github.com/mastodon/mastodon/pull/24334))
- Fix unescaped user input in LDAP query ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24379))

## [4.1.1] - 2023-03-16

### Added

- Add redirection from paths with url-encoded `@` to their decoded form ([thijskh](https://github.com/mastodon/mastodon/pull/23593))
- Add `lang` attribute to native language names in language picker in Web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23749))
- Add headers to outgoing mails to avoid auto-replies ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23597))
- Add support for refreshing many accounts at once with `tootctl accounts refresh` ([9p4](https://github.com/mastodon/mastodon/pull/23304))
- Add confirmation modal when clicking to edit a post with a non-empty compose form ([PauloVilarinho](https://github.com/mastodon/mastodon/pull/23936))
- Add support for the HAproxy PROXY protocol through the `PROXY_PROTO_V1` environment variable ([CSDUMMI](https://github.com/mastodon/mastodon/pull/24064))
- Add `SENDFILE_HEADER` environment variable ([Gargron](https://github.com/mastodon/mastodon/pull/24123))
- Add cache headers to static files served through Rails ([Gargron](https://github.com/mastodon/mastodon/pull/24120))

### Changed

- Increase contrast of upload progress bar background ([toolmantim](https://github.com/mastodon/mastodon/pull/23836))
- Change post auto-deletion throttling constants to better scale with server size ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23320))
- Change order of bookmark and favourite sidebar entries in single-column UI for consistency ([TerryGarcia](https://github.com/mastodon/mastodon/pull/23701))
- Change `ActivityPub::DeliveryWorker` retries to be spread out more ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21956))

### Fixed

- Fix “Remove all followers from the selected domains” also removing follows and notifications ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23805))
- Fix streaming metrics format ([emilweth](https://github.com/mastodon/mastodon/pull/23519), [emilweth](https://github.com/mastodon/mastodon/pull/23520))
- Fix case-sensitive check for previously used hashtags in hashtag autocompletion ([deanveloper](https://github.com/mastodon/mastodon/pull/23526))
- Fix focus point of already-attached media not saving after edit ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23566))
- Fix sidebar behavior in settings/admin UI on mobile ([wxt2005](https://github.com/mastodon/mastodon/pull/23764))
- Fix inefficiency when searching accounts per username in admin interface ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23801))
- Fix duplicate “Publish” button on mobile ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23804))
- Fix server error when failing to follow back followers from `/relationships` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23787))
- Fix server error when attempting to display the edit history of a trendable post in the admin interface ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23574))
- Fix `tootctl accounts migrate` crashing because of a typo ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23567))
- Fix original account being unfollowed on migration before the follow request to the new account could be sent ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21957))
- Fix the “Back” button in column headers sometimes leaving Mastodon ([c960657](https://github.com/mastodon/mastodon/pull/23953))
- Fix pgBouncer resetting application name on every transaction ([Gargron](https://github.com/mastodon/mastodon/pull/23958))
- Fix unconfirmed accounts being counted as active users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23803))
- Fix `/api/v1/streaming` sub-paths not being redirected ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23988))
- Fix drag'n'drop upload area text that spans multiple lines not being centered ([vintprox](https://github.com/mastodon/mastodon/pull/24029))
- Fix sidekiq jobs not triggering Elasticsearch index updates ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24046))
- Fix tags being unnecessarily stripped from plain-text short site description ([c960657](https://github.com/mastodon/mastodon/pull/23975))
- Fix HTML entities not being un-escaped in extracted plain-text from remote posts ([c960657](https://github.com/mastodon/mastodon/pull/24019))
- Fix dashboard crash on ElasticSearch server error ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23751))
- Fix incorrect post links in strikes when the account is remote ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23611))
- Fix misleading error code when receiving invalid WebAuthn credentials ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23568))
- Fix duplicate mails being sent when the SMTP server is too slow to close the connection ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23750))

### Security

- Change user backups to use expiring URLs for download when possible ([Gargron](https://github.com/mastodon/mastodon/pull/24136))
- Add warning for object storage misconfiguration ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24137))

## [4.1.0] - 2023-02-10

### Added

- **Add support for importing/exporting server-wide domain blocks** ([enbylenore](https://github.com/mastodon/mastodon/pull/20597), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/21471), [dariusk](https://github.com/mastodon/mastodon/pull/22803), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/21470))
- **Add listing of followed hashtags** ([connorshea](https://github.com/mastodon/mastodon/pull/21773))
- **Add support for editing media description and focus point of already-sent posts** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20878))
  - Previously, you could add and remove attachments, but not edit media description of already-attached media
  - REST API changes:
    - `PUT /api/v1/statuses/:id` now takes an extra `media_attributes[]` array parameter with the `id` of the updated media and their updated `description`, `focus`, and `thumbnail`
- **Add follow request banner on account header** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20785))
  - REST API changes:
    - `Relationship` entities have an extra `requested_by` boolean attribute representing whether the represented user has requested to follow you
- **Add confirmation screen when handling reports** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22375), [Gargron](https://github.com/mastodon/mastodon/pull/23156), [tribela](https://github.com/mastodon/mastodon/pull/23178))
- Add option to make the landing page be `/about` even when trends are enabled ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20808))
- Add `noindex` setting back to the admin interface ([prplecake](https://github.com/mastodon/mastodon/pull/22205))
- Add instance peers API endpoint toggle back to the admin interface ([dariusk](https://github.com/mastodon/mastodon/pull/22810))
- Add instance activity API endpoint toggle back to the admin interface ([dariusk](https://github.com/mastodon/mastodon/pull/22833))
- Add setting for status page URL ([Gargron](https://github.com/mastodon/mastodon/pull/23390), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23499))
  - REST API changes:
    - Add `configuration.urls.status` attribute to the object returned by `GET /api/v2/instance`
- Add `account.approved` webhook ([Saiv46](https://github.com/mastodon/mastodon/pull/22938))
- Add 12 hours option to polls ([Pleclown](https://github.com/mastodon/mastodon/pull/21131))
- Add dropdown menu item to open admin interface for remote domains ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21895))
- Add `--remove-headers`, `--prune-profiles` and `--include-follows` flags to `tootctl media remove` ([evanphilip](https://github.com/mastodon/mastodon/pull/22149))
- Add `--email` and `--dry-run` options to `tootctl accounts delete` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22328))
- Add `tootctl accounts migrate` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22330))
- Add `tootctl accounts prune` ([tribela](https://github.com/mastodon/mastodon/pull/18397))
- Add `tootctl domains purge` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22063))
- Add `SIDEKIQ_CONCURRENCY` environment variable ([muffinista](https://github.com/mastodon/mastodon/pull/19589))
- Add `DB_POOL` environment variable support for streaming server ([Gargron](https://github.com/mastodon/mastodon/pull/23470))
- Add `MIN_THREADS` environment variable to set minimum Puma threads ([jimeh](https://github.com/mastodon/mastodon/pull/21048))
- Add explanation text to log-in page ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20946))
- Add user profile OpenGraph tag on post pages ([bramus](https://github.com/mastodon/mastodon/pull/21423))
- Add maskable icon support for Android ([workeffortwaste](https://github.com/mastodon/mastodon/pull/20904))
- Add Belarusian to supported languages ([Mixaill](https://github.com/mastodon/mastodon/pull/22022))
- Add Western Frisian to supported languages ([ykzts](https://github.com/mastodon/mastodon/pull/18602))
- Add Montenegrin to the language picker ([ayefries](https://github.com/mastodon/mastodon/pull/21013))
- Add Southern Sami and Lule Sami to the language picker ([Jullan-M](https://github.com/mastodon/mastodon/pull/21262))
- Add logging for Rails cache timeouts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21667))
- Add color highlight for active hashtag “follow” button ([MFTabriz](https://github.com/mastodon/mastodon/pull/21629))
- Add brotli compression to `assets:precompile` ([Izorkin](https://github.com/mastodon/mastodon/pull/19025))
- Add “disabled” account filter to the `/admin/accounts` UI ([tribela](https://github.com/mastodon/mastodon/pull/21282))
- Add transparency to modal background for accessibility ([edent](https://github.com/mastodon/mastodon/pull/18081))
- Add `lang` attribute to image description textarea and poll option field ([c960657](https://github.com/mastodon/mastodon/pull/23293))
- Add `spellcheck` attribute to Content Warning and poll option input fields ([c960657](https://github.com/mastodon/mastodon/pull/23395))
- Add `title` attribute to video elements in media attachments ([bramus](https://github.com/mastodon/mastodon/pull/21420))
- Add left and right margins to emojis ([dsblank](https://github.com/mastodon/mastodon/pull/20464))
- Add `roles` attribute to `Account` entities in REST API ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23255), [tribela](https://github.com/mastodon/mastodon/pull/23428))
- Add `reading:autoplay:gifs` to `/api/v1/preferences` ([j-f1](https://github.com/mastodon/mastodon/pull/22706))
- Add `hide_collections` parameter to `/api/v1/accounts/credentials` ([CarlSchwan](https://github.com/mastodon/mastodon/pull/22790))
- Add `policy` attribute to web push subscription objects in REST API at `/api/v1/push/subscriptions` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23210))
- Add metrics endpoint to streaming API ([Gargron](https://github.com/mastodon/mastodon/pull/23388), [Gargron](https://github.com/mastodon/mastodon/pull/23469))
- Add more specific error messages to HTTP signature verification ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21617))
- Add Storj DCS to cloud object storage options in the `mastodon:setup` rake task ([jtolio](https://github.com/mastodon/mastodon/pull/21929))
- Add checkmark symbol in the checkbox for sensitive media ([sidp](https://github.com/mastodon/mastodon/pull/22795))
- Add missing accessibility attributes to logout link in modals ([kytta](https://github.com/mastodon/mastodon/pull/22549))
- Add missing accessibility attributes to “Hide image” button in `MediaGallery` ([hs4man21](https://github.com/mastodon/mastodon/pull/22513))
- Add missing accessibility attributes to hide content warning field when disabled ([hs4man21](https://github.com/mastodon/mastodon/pull/22568))
- Add `aria-hidden` to footer circle dividers to improve accessibility ([hs4man21](https://github.com/mastodon/mastodon/pull/22576))
- Add `lang` attribute to compose form inputs ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23240))

### Changed

- **Ensure exact match is the first result in hashtag searches** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21315))
- Change account search to return followed accounts first ([dariusk](https://github.com/mastodon/mastodon/pull/22956))
- Change batch account suspension to create a strike ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20897))
- Change default reply language to match the default language when replying to a translated post ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22272))
- Change misleading wording about waitlists ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20850))
- Increase width of the unread notification border ([connorshea](https://github.com/mastodon/mastodon/pull/21692))
- Change new post notification button on profiles to make it more apparent when it is enabled ([tribela](https://github.com/mastodon/mastodon/pull/22541))
- Change trending tags admin interface to always show batch action controls ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23013))
- Change wording of some OAuth scope descriptions ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22491))
- Change wording of admin report handling actions ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18388))
- Change confirm prompts for relationships management ([tribela](https://github.com/mastodon/mastodon/pull/19411))
- Change language surrounding disability in prompts for media descriptions ([hs4man21](https://github.com/mastodon/mastodon/pull/20923))
- Change confusing wording in the sign in banner ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22490))
- Change `POST /settings/applications/:id` to regenerate token on scopes change ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23359))
- Change account moderation notes to make links clickable ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22553))
- Change link previews for statuses to never use avatar as fallback ([Gargron](https://github.com/mastodon/mastodon/pull/23376))
- Change email address input to be read-only for logged-in users when requesting a new confirmation e-mail ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23247))
- Change notifications per page from 15 to 40 in REST API ([Gargron](https://github.com/mastodon/mastodon/pull/23348))
- Change number of stored items in home feed from 400 to 800 ([Gargron](https://github.com/mastodon/mastodon/pull/23349))
- Change API rate limits from 300/5min per user to 1500/5min per user, 300/5min per app ([Gargron](https://github.com/mastodon/mastodon/pull/23347))
- Save avatar or header correctly even if the other one fails ([tribela](https://github.com/mastodon/mastodon/pull/18465))
- Change `referrer-policy` to `same-origin` application-wide ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23014), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23037))
- Add 'private' to `Cache-Control`, match Rails expectations ([daxtens](https://github.com/mastodon/mastodon/pull/20608))
- Make the button that expands the compose form differentiable from the button that publishes a post ([Tak](https://github.com/mastodon/mastodon/pull/20864))
- Change automatic post deletion configuration to be accessible to moved users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20774))
- Make tag following idempotent ([trwnh](https://github.com/mastodon/mastodon/pull/20860), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/21285))
- Use buildx functions for faster builds ([inductor](https://github.com/mastodon/mastodon/pull/20692))
- Split off Dockerfile components for faster builds ([moritzheiber](https://github.com/mastodon/mastodon/pull/20933), [ineffyble](https://github.com/mastodon/mastodon/pull/20948), [BtbN](https://github.com/mastodon/mastodon/pull/21028))
- Change last occurrence of “silence” to “limit” in UI text ([cincodenada](https://github.com/mastodon/mastodon/pull/20637))
- Change “hide toot” to “hide post” ([seanthegeek](https://github.com/mastodon/mastodon/pull/22385))
- Don't allow URLs that contain non-normalized paths to be verified ([dgl](https://github.com/mastodon/mastodon/pull/20999))
- Change the “Trending now” header to be a link to the Explore page ([connorshea](https://github.com/mastodon/mastodon/pull/21759))
- Change PostgreSQL connection timeout from 2 minutes to 15 seconds ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21790))
- Make handle more easily selectable on profile page ([cadars](https://github.com/mastodon/mastodon/pull/21479))
- Allow admins to refresh remotely-suspended accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22327))
- Change dropdown menu to contain “Copy link to post” even for non-public posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21316))
- Allow adding relays in secure mode and limited federation mode ([ineffyble](https://github.com/mastodon/mastodon/pull/22324))
- Change timestamps to be displayed using the user's timezone throughout the moderation interface ([FrancisMurillo](https://github.com/mastodon/mastodon/pull/21878), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/22555))
- Change CSP directives on API to be tight and concise ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20960))
- Change web UI to not autofocus the compose form ([raboof](https://github.com/mastodon/mastodon/pull/16517), [Akkiesoft](https://github.com/mastodon/mastodon/pull/23094))
- Change idempotency key handling for posting when database access is slow ([lambda](https://github.com/mastodon/mastodon/pull/21840))
- Change remote media files to be downloaded outside of transactions ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21796))
- Improve contrast of charts in “poll has ended” notifications ([j-f1](https://github.com/mastodon/mastodon/pull/22575))
- Change OEmbed detection and validation to be somewhat more lenient ([ineffyble](https://github.com/mastodon/mastodon/pull/22533))
- Widen ElasticSearch version detection to not display a warning for OpenSearch ([VyrCossont](https://github.com/mastodon/mastodon/pull/22422), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23064))
- Change link verification to allow pages larger than 1MB as long as the link is in the first 1MB ([untitaker](https://github.com/mastodon/mastodon/pull/22879))
- Update default Node.js version to Node.js 16 ([ineffyble](https://github.com/mastodon/mastodon/pull/22223), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/22342))

### Removed

- Officially remove support for Ruby 2.6 ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21477))
- Remove `object-fit` polyfill used for old versions of Microsoft Edge ([shuuji3](https://github.com/mastodon/mastodon/pull/22693))
- Remove `intersection-observer` polyfill for old Safari support ([shuuji3](https://github.com/mastodon/mastodon/pull/23284))
- Remove empty `title` tag from mailer layout ([nametoolong](https://github.com/mastodon/mastodon/pull/23078))
- Remove post count and last posts from ActivityPub representation of hashtag collections ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23460))

### Fixed

- **Fix changing domain block severity not undoing individual account effects** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22135))
- Fix suspension worker crashing on S3-compatible setups without ACL support ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22487))
- Fix possible race conditions when suspending/unsuspending accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22363))
- Fix being stuck in edit mode when deleting the edited posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22126))
- Fix attached media uploads not being cleared when replying to a post ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23504))
- Fix filters not being applied to some notification types ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23211))
- Fix incorrect link in push notifications for some event types ([elizabeth-dev](https://github.com/mastodon/mastodon/pull/23286))
- Fix some performance issues with `/admin/instances` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21907))
- Fix some pre-4.0 admin audit logs ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22091))
- Fix moderation audit log items for warnings having incorrect links ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23242))
- Fix account activation being sometimes triggered before email confirmation ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23245))
- Fix missing OAuth scopes for admin APIs ([trwnh](https://github.com/mastodon/mastodon/pull/20918), [trwnh](https://github.com/mastodon/mastodon/pull/20979))
- Fix voter count not being cleared when a poll is reset ([afontenot](https://github.com/mastodon/mastodon/pull/21700))
- Fix attachments of edited posts not being fetched ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21565))
- Fix irreversible and whole_word parameters handling in `/api/v1/filters` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21988))
- Fix 500 error when marking posts as sensitive while some of them are deleted ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22134))
- Fix expanded posts not always being scrolled into view ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21797))
- Fix not being able to scroll the remote interaction modal on small screens ([xendke](https://github.com/mastodon/mastodon/pull/21763))
- Fix not being able to scroll in post history modal ([cadars](https://github.com/mastodon/mastodon/pull/23396))
- Fix audio player volume control on Safari ([minacle](https://github.com/mastodon/mastodon/pull/23187))
- Fix disappearing “Explore” tabs on Safari ([nyura](https://github.com/mastodon/mastodon/pull/20917), [ykzts](https://github.com/mastodon/mastodon/pull/20982))
- Fix wrong padding in RTL layout ([Gargron](https://github.com/mastodon/mastodon/pull/23157))
- Fix drag & drop upload area display in single-column mode ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23217))
- Fix being unable to get a single EmailDomainBlock from the admin API ([trwnh](https://github.com/mastodon/mastodon/pull/20846))
- Fix admin-set follow recommandations being case-sensitive ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23500))
- Fix unserialized `role` on account entities in admin API ([Gargron](https://github.com/mastodon/mastodon/pull/23290))
- Fix pagination of followed tags ([trwnh](https://github.com/mastodon/mastodon/pull/20861))
- Fix dropdown menu positions when scrolling ([sidp](https://github.com/mastodon/mastodon/pull/22916), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23062))
- Fix email with empty domain name labels passing validation ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23246))
- Fix mysterious registration failure when “Require a reason to join” is set with open registrations ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22127))
- Fix attachment rendering of edited posts in OpenGraph ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22270))
- Fix invalid/empty RSS feed link on account pages ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20772))
- Fix error in `VerifyLinkService` when processing links with no href ([joshuap](https://github.com/mastodon/mastodon/pull/20741))
- Fix error in `VerifyLinkService` when processing links with invalid URLs ([untitaker](https://github.com/mastodon/mastodon/pull/23204))
- Fix media uploads with FFmpeg 5 ([dead10ck](https://github.com/mastodon/mastodon/pull/21191))
- Fix sensitive flag not being set when replying to a post with a content warning under certain conditions ([kedamaDQ](https://github.com/mastodon/mastodon/pull/21724))
- Fix misleading message briefly showing up when loading follow requests under some conditions ([c960657](https://github.com/mastodon/mastodon/pull/23386))
- Fix “Share @:user's profile” profile menu item not working ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21490))
- Fix crash and incorrect behavior in `tootctl domains crawl` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19004))
- Fix autoplay on iOS ([jamesadney](https://github.com/mastodon/mastodon/pull/21422))
- Fix user clean-up scheduler crash when an unconfirmed account has a moderation note ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23318))
- Fix spaces not being stripped in admin account search ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21324))
- Fix spaces not being stripped when adding relays ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22655))
- Fix infinite loading spinner instead of soft 404 for non-existing remote accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21303))
- Fix minor visual issue with the top border of verified account fields ([j-f1](https://github.com/mastodon/mastodon/pull/22006))
- Fix pending account approval and rejection not being recorded in the admin audit log ([FrancisMurillo](https://github.com/mastodon/mastodon/pull/22088))
- Fix “Sign up” button with closed registrations not opening modal on mobile ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22060))
- Fix UI header overflowing on mobile ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21783))
- Fix 500 error when trying to migrate to an invalid address ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21462))
- Fix crash when trying to fetch unobtainable avatar of user using external authentication ([lochiiconnectivity](https://github.com/mastodon/mastodon/pull/22462))
- Fix processing error on incoming malformed JSON-LD under some situations ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23416))
- Fix potential duplicate posts in Explore tab ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22121))
- Fix deprecation warning in `tootctl accounts rotate` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22120))
- Fix styling of featured tags in light theme ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23252))
- Fix missing style in warning and strike cards ([AtelierSnek](https://github.com/mastodon/mastodon/pull/22177), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/22302))
- Fix wasteful request to `/api/v1/custom_emojis` when not logged in ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22326))
- Fix replies sometimes being delivered to user-blocked domains ([tribela](https://github.com/mastodon/mastodon/pull/22117))
- Fix admin dashboard crash when using some ElasticSearch replacements ([cortices](https://github.com/mastodon/mastodon/pull/21006))
- Fix profile avatar being slightly offset into left border ([RiedleroD](https://github.com/mastodon/mastodon/pull/20994))
- Fix N+1 queries in `NotificationsController` ([nametoolong](https://github.com/mastodon/mastodon/pull/21202))
- Fix being unable to react to announcements with the keycap number sign emoji ([kescherCode](https://github.com/mastodon/mastodon/pull/22231))
- Fix height computation of post embeds ([hodgesmr](https://github.com/mastodon/mastodon/pull/22141))
- Fix accessibility issue of the search bar due to hidden placeholder ([alexstine](https://github.com/mastodon/mastodon/pull/21275))
- Fix layout change handler not being removed due to a typo ([nschonni](https://github.com/mastodon/mastodon/pull/21829))
- Fix typo in the default `S3_HOSTNAME` used in the `mastodon:setup` rake task ([danp](https://github.com/mastodon/mastodon/pull/19932))
- Fix the top action bar appearing in the multi-column layout ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20943))
- Fix inability to use local LibreTranslate without setting `ALLOWED_PRIVATE_ADDRESSES` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21926))
- Fix punycoded local domains not being prettified in initial state ([Tritlo](https://github.com/mastodon/mastodon/pull/21440))
- Fix CSP violation warning by removing inline CSS from SVG logo ([luxiaba](https://github.com/mastodon/mastodon/pull/20814))
- Fix margin for search field on medium window size ([minacle](https://github.com/mastodon/mastodon/pull/21606))
- Fix search popout scrolling with the page in single-column mode ([rgroothuijsen](https://github.com/mastodon/mastodon/pull/16463))
- Fix minor post cache hydration discrepancy ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19879))
- Fix `・` detection in hashtags ([parthoghosh24](https://github.com/mastodon/mastodon/pull/22888))
- Fix hashtag follows bypassing user blocks ([tribela](https://github.com/mastodon/mastodon/pull/22849))
- Fix moved accounts being incorrectly redirected to account settings when trying to view a remote profile ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22497))
- Fix site upload validations ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22479))
- Fix “Add new domain block” button using last submitted search value instead of the current one ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22485))
- Fix misleading hashtag warning when posting with “Followers only” or “Mentioned people only” visibility ([n0toose](https://github.com/mastodon/mastodon/pull/22827))
- Fix embedded posts with videos grabbing focus ([Akkiesoft](https://github.com/mastodon/mastodon/pull/22778))
- Fix `$` not being escaped in `.env.production` files generated by the `mastodon:setup` rake task ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23012), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/23072))
- Fix sanitizer parsing link text as HTML when stripping unsupported links ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22558))
- Fix `scheduled_at` input not using `datetime-local` when editing announcements ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21896))
- Fix REST API serializer for `Account` not including `moved` when the moved account has itself moved ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22483))
- Fix `/api/v1/admin/trends/tags` using wrong serializer ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18943))
- Fix situations in which instance actor can be set to a Mastodon-incompatible name ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22307))

### Security

- Add `form-action` CSP directive ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20781), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20958), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20962))
- Fix unbounded recursion in account discovery ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22025))
- Revoke all authorized applications on password reset ([FrancisMurillo](https://github.com/mastodon/mastodon/pull/21325))
- Fix unbounded recursion in post discovery ([ClearlyClaire,nametoolong](https://github.com/mastodon/mastodon/pull/23506))

## [4.0.2] - 2022-11-15

### Fixed

- Fix wrong color on mentions hidden behind content warning in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/20724))
- Fix filters from other users being used in the streaming service ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20719))
- Fix `unsafe-eval` being used when `wasm-unsafe-eval` is enough in Content Security Policy ([Gargron](https://github.com/mastodon/mastodon/pull/20729), [prplecake](https://github.com/mastodon/mastodon/pull/20606))

## [4.0.1] - 2022-11-14

### Fixed

- Fix nodes order being sometimes mangled when rewriting emoji ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20677))

## [4.0.0] - 2022-11-14

Some of the features in this release have been funded through the [NGI0 Discovery](https://nlnet.nl/discovery) Fund, a fund established by [NLnet](https://nlnet.nl/) with financial support from the European Commission's [Next Generation Internet](https://ngi.eu/) programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825322.

### Added

- Add ability to filter followed accounts' posts by language ([Gargron](https://github.com/mastodon/mastodon/pull/19095), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19268))
- **Add ability to follow hashtags** ([Gargron](https://github.com/mastodon/mastodon/pull/18809), [Gargron](https://github.com/mastodon/mastodon/pull/18862), [Gargron](https://github.com/mastodon/mastodon/pull/19472), [noellabo](https://github.com/mastodon/mastodon/pull/18924))
- Add ability to filter individual posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18945))
- **Add ability to translate posts** ([Gargron](https://github.com/mastodon/mastodon/pull/19218), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19433), [Gargron](https://github.com/mastodon/mastodon/pull/19453), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19434), [Gargron](https://github.com/mastodon/mastodon/pull/19388), [ykzts](https://github.com/mastodon/mastodon/pull/19244), [Gargron](https://github.com/mastodon/mastodon/pull/19245))
- Add featured tags to web UI ([noellabo](https://github.com/mastodon/mastodon/pull/19408), [noellabo](https://github.com/mastodon/mastodon/pull/19380), [noellabo](https://github.com/mastodon/mastodon/pull/19358), [noellabo](https://github.com/mastodon/mastodon/pull/19409), [Gargron](https://github.com/mastodon/mastodon/pull/19382), [ykzts](https://github.com/mastodon/mastodon/pull/19418), [noellabo](https://github.com/mastodon/mastodon/pull/19403), [noellabo](https://github.com/mastodon/mastodon/pull/19404), [Gargron](https://github.com/mastodon/mastodon/pull/19398), [Gargron](https://github.com/mastodon/mastodon/pull/19712), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20018))
- **Add support for language preferences for trending statuses and links** ([Gargron](https://github.com/mastodon/mastodon/pull/18288), [Gargron](https://github.com/mastodon/mastodon/pull/19349), [ykzts](https://github.com/mastodon/mastodon/pull/19335))
  - Previously, you could only see trends in your current language
  - For less popular languages, that meant empty trends
  - Now, trends in your preferred languages' are shown on top, with others beneath
- Add server rules to sign-up flow ([Gargron](https://github.com/mastodon/mastodon/pull/19296))
- Add privacy icons to report modal in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19190))
- Add `noopener` to links to remote profiles in web UI ([shleeable](https://github.com/mastodon/mastodon/pull/19014))
- Add option to open original page in dropdowns of remote content in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/20299))
- Add warning for sensitive audio posts in web UI ([rgroothuijsen](https://github.com/mastodon/mastodon/pull/17885))
- Add language attribute to posts in web UI ([tribela](https://github.com/mastodon/mastodon/pull/18544))
- Add support for uploading WebP files ([Saiv46](https://github.com/mastodon/mastodon/pull/18506))
- Add support for uploading `audio/vnd.wave` files ([tribela](https://github.com/mastodon/mastodon/pull/18737))
- Add support for uploading AVIF files ([txt-file](https://github.com/mastodon/mastodon/pull/19647))
- Add support for uploading HEIC files ([Gargron](https://github.com/mastodon/mastodon/pull/19618))
- Add more debug information when processing remote accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/15605), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19209))
- **Add retention policy for cached content and media** ([Gargron](https://github.com/mastodon/mastodon/pull/19232), [zunda](https://github.com/mastodon/mastodon/pull/19478), [Gargron](https://github.com/mastodon/mastodon/pull/19458), [Gargron](https://github.com/mastodon/mastodon/pull/19248))
  - Set for how long remote posts or media should be cached on your server
  - Hands-off alternative to `tootctl` commands
- **Add customizable user roles** ([Gargron](https://github.com/mastodon/mastodon/pull/18641), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18812), [Gargron](https://github.com/mastodon/mastodon/pull/19040), [tribela](https://github.com/mastodon/mastodon/pull/18825), [tribela](https://github.com/mastodon/mastodon/pull/18826), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18776), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18777), [unextro](https://github.com/mastodon/mastodon/pull/18786), [tribela](https://github.com/mastodon/mastodon/pull/18824), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19436))
  - Previously, there were 3 hard-coded roles, user, moderator, and admin
  - Create your own roles and decide which permissions they should have
- Add notifications for new reports ([Gargron](https://github.com/mastodon/mastodon/pull/18697), [Gargron](https://github.com/mastodon/mastodon/pull/19475))
- Add ability to select all accounts matching search for batch actions in admin UI ([Gargron](https://github.com/mastodon/mastodon/pull/19053), [Gargron](https://github.com/mastodon/mastodon/pull/19054))
- Add ability to view previous edits of a status in admin UI ([Gargron](https://github.com/mastodon/mastodon/pull/19462))
- Add ability to block sign-ups from IP ([Gargron](https://github.com/mastodon/mastodon/pull/19037))
- **Add webhooks to admin UI** ([Gargron](https://github.com/mastodon/mastodon/pull/18510))
- Add admin API for managing domain allows ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18668))
- Add admin API for managing domain blocks ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18247))
- Add admin API for managing e-mail domain blocks ([Gargron](https://github.com/mastodon/mastodon/pull/19066))
- Add admin API for managing canonical e-mail blocks ([Gargron](https://github.com/mastodon/mastodon/pull/19067))
- Add admin API for managing IP blocks ([Gargron](https://github.com/mastodon/mastodon/pull/19065), [trwnh](https://github.com/mastodon/mastodon/pull/20207))
- Add `sensitized` attribute to accounts in admin REST API ([trwnh](https://github.com/mastodon/mastodon/pull/20094))
- Add `services` and `metadata` to the NodeInfo endpoint ([MFTabriz](https://github.com/mastodon/mastodon/pull/18563))
- Add `--remove-role` option to `tootctl accounts modify` ([Gargron](https://github.com/mastodon/mastodon/pull/19477))
- Add `--days` option to `tootctl media refresh` ([tribela](https://github.com/mastodon/mastodon/pull/18425))
- Add `EMAIL_DOMAIN_LISTS_APPLY_AFTER_CONFIRMATION` environment variable ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18642))
- Add `IP_RETENTION_PERIOD` and `SESSION_RETENTION_PERIOD` environment variables ([kescherCode](https://github.com/mastodon/mastodon/pull/18757))
- Add `http_hidden_proxy` environment variable ([tribela](https://github.com/mastodon/mastodon/pull/18427))
- Add `ENABLE_STARTTLS` environment variable ([erbridge](https://github.com/mastodon/mastodon/pull/20321))
- Add caching for payload serialization during fan-out ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19637), [Gargron](https://github.com/mastodon/mastodon/pull/19642), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19746), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19747), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19963))
- Add assets from Twemoji 14.0 ([Gargron](https://github.com/mastodon/mastodon/pull/19733))
- Add reputation and followers score boost to SQL-only account search ([Gargron](https://github.com/mastodon/mastodon/pull/19251))
- Add Scots, Balaibalan, Láadan, Lingua Franca Nova, Lojban, Toki Pona to languages list ([VyrCossont](https://github.com/mastodon/mastodon/pull/20168))
- Set autocomplete hints for e-mail, password and OTP fields ([rcombs](https://github.com/mastodon/mastodon/pull/19833), [offbyone](https://github.com/mastodon/mastodon/pull/19946), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20071))
- Add support for DigitalOcean Spaces in setup wizard ([v-aisac](https://github.com/mastodon/mastodon/pull/20573))

### Changed

- **Change brand color and logotypes** ([Gargron](https://github.com/mastodon/mastodon/pull/18592), [Gargron](https://github.com/mastodon/mastodon/pull/18639), [Gargron](https://github.com/mastodon/mastodon/pull/18691), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18634), [Gargron](https://github.com/mastodon/mastodon/pull/19254), [mayaeh](https://github.com/mastodon/mastodon/pull/18710))
- **Change post editing to be enabled in web UI** ([Gargron](https://github.com/mastodon/mastodon/pull/19103))
- **Change web UI to work for logged-out users** ([Gargron](https://github.com/mastodon/mastodon/pull/18961), [Gargron](https://github.com/mastodon/mastodon/pull/19250), [Gargron](https://github.com/mastodon/mastodon/pull/19294), [Gargron](https://github.com/mastodon/mastodon/pull/19306), [Gargron](https://github.com/mastodon/mastodon/pull/19315), [ykzts](https://github.com/mastodon/mastodon/pull/19322), [Gargron](https://github.com/mastodon/mastodon/pull/19412), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19437), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19415), [Gargron](https://github.com/mastodon/mastodon/pull/19348), [Gargron](https://github.com/mastodon/mastodon/pull/19295), [Gargron](https://github.com/mastodon/mastodon/pull/19422), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19414), [Gargron](https://github.com/mastodon/mastodon/pull/19319), [Gargron](https://github.com/mastodon/mastodon/pull/19345), [Gargron](https://github.com/mastodon/mastodon/pull/19310), [Gargron](https://github.com/mastodon/mastodon/pull/19301), [Gargron](https://github.com/mastodon/mastodon/pull/19423), [ykzts](https://github.com/mastodon/mastodon/pull/19471), [ykzts](https://github.com/mastodon/mastodon/pull/19333), [ykzts](https://github.com/mastodon/mastodon/pull/19337), [ykzts](https://github.com/mastodon/mastodon/pull/19272), [ykzts](https://github.com/mastodon/mastodon/pull/19468), [Gargron](https://github.com/mastodon/mastodon/pull/19466), [Gargron](https://github.com/mastodon/mastodon/pull/19457), [Gargron](https://github.com/mastodon/mastodon/pull/19426), [Gargron](https://github.com/mastodon/mastodon/pull/19427), [Gargron](https://github.com/mastodon/mastodon/pull/19421), [Gargron](https://github.com/mastodon/mastodon/pull/19417), [Gargron](https://github.com/mastodon/mastodon/pull/19413), [Gargron](https://github.com/mastodon/mastodon/pull/19397), [Gargron](https://github.com/mastodon/mastodon/pull/19387), [Gargron](https://github.com/mastodon/mastodon/pull/19396), [Gargron](https://github.com/mastodon/mastodon/pull/19385), [ykzts](https://github.com/mastodon/mastodon/pull/19334), [ykzts](https://github.com/mastodon/mastodon/pull/19329), [Gargron](https://github.com/mastodon/mastodon/pull/19324), [Gargron](https://github.com/mastodon/mastodon/pull/19318), [Gargron](https://github.com/mastodon/mastodon/pull/19316), [Gargron](https://github.com/mastodon/mastodon/pull/19263), [trwnh](https://github.com/mastodon/mastodon/pull/19305), [ykzts](https://github.com/mastodon/mastodon/pull/19273), [Gargron](https://github.com/mastodon/mastodon/pull/19801), [Gargron](https://github.com/mastodon/mastodon/pull/19790), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19773), [Gargron](https://github.com/mastodon/mastodon/pull/19798), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19724), [Gargron](https://github.com/mastodon/mastodon/pull/19709), [Gargron](https://github.com/mastodon/mastodon/pull/19514), [Gargron](https://github.com/mastodon/mastodon/pull/19562), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19981), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19978), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20148), [Gargron](https://github.com/mastodon/mastodon/pull/20302), [cutls](https://github.com/mastodon/mastodon/pull/20400))
  - The web app can now be accessed without being logged in
  - No more `/web` prefix on web app paths
  - Profiles, posts, and other public pages now use the same interface for logged in and logged out users
  - The web app displays a server information banner
  - Pop-up windows for remote interaction have been replaced with a modal window
  - No need to type in your username for remote interaction, copy-paste-to-search method explained
  - Various hints throughout the app explain what the different timelines are
  - New about page design
  - New privacy policy page design shows when the policy was last updated
  - All sections of the web app now have appropriate window titles
  - The layout of the interface has been streamlined between different screen sizes
  - Posts now use more horizontal space
- Change label of publish button to be "Publish" again in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/18583))
- Change language to be carried over on reply in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18557))
- Change "Unfollow" to "Cancel follow request" when request still pending in web UI ([prplecake](https://github.com/mastodon/mastodon/pull/19363))
- **Change post filtering system** ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18058), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19050), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18894), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19051), [noellabo](https://github.com/mastodon/mastodon/pull/18923), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18956), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18744), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/19878), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/20567))
  - Filtered keywords and phrases can now be grouped into named categories
  - Filtered posts show which exact filter was hit
  - Individual posts can be added to a filter
  - You can peek inside filtered posts anyway
- Change path of privacy policy page from `/terms` to `/privacy-policy` ([Gargron](https://github.com/mastodon/mastodon/pull/19249))
- Change how hashtags are normalized ([Gargron](https://github.com/mastodon/mastodon/pull/18795), [Gargron](https://github.com/mastodon/mastodon/pull/18863), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18854))
- Change settings area to be separated into categories in admin UI ([Gargron](https://github.com/mastodon/mastodon/pull/19407), [Gargron](https://github.com/mastodon/mastodon/pull/19533))
- Change "No accounts selected" errors to use the appropriate noun in admin UI ([prplecake](https://github.com/mastodon/mastodon/pull/19356))
- Change e-mail domain blocks to match subdomains of blocked domains ([Gargron](https://github.com/mastodon/mastodon/pull/18979))
- Change custom emoji file size limit from 50 KB to 256 KB ([Gargron](https://github.com/mastodon/mastodon/pull/18788))
- Change "Allow trends without prior review" setting to also work for trending posts ([Gargron](https://github.com/mastodon/mastodon/pull/17977))
- Change admin announcements form to use single inputs for date and time in admin UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18321))
- Change search API to be accessible without being logged in ([Gargron](https://github.com/mastodon/mastodon/pull/18963), [Gargron](https://github.com/mastodon/mastodon/pull/19326))
- Change following and followers API to be accessible without being logged in ([Gargron](https://github.com/mastodon/mastodon/pull/18964))
- Change `AUTHORIZED_FETCH` to not block unauthenticated REST API access ([Gargron](https://github.com/mastodon/mastodon/pull/19803))
- Change Helm configuration ([deepy](https://github.com/mastodon/mastodon/pull/18997), [jgsmith](https://github.com/mastodon/mastodon/pull/18415), [deepy](https://github.com/mastodon/mastodon/pull/18941))
- Change mentions of blocked users to not be processed ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19725))
- Change max. thumbnail dimensions to 640x360px (360p) ([Gargron](https://github.com/mastodon/mastodon/pull/19619))
- Change post-processing to be deferred only for large media types ([Gargron](https://github.com/mastodon/mastodon/pull/19617))
- Change link verification to only work for https links without unicode ([Gargron](https://github.com/mastodon/mastodon/pull/20304), [Gargron](https://github.com/mastodon/mastodon/pull/20295))
- Change account deletion requests to spread out over time ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20222))
- Change larger reblogs/favourites numbers to be shortened in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/20303))
- Change incoming activity processing to happen in `ingress` queue ([Gargron](https://github.com/mastodon/mastodon/pull/20264))
- Change notifications to not link show preview cards in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20335))
- Change amount of replies returned for logged out users in REST API ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20355))
- Change in-app links to keep you in-app in web UI ([trwnh](https://github.com/mastodon/mastodon/pull/20540), [Gargron](https://github.com/mastodon/mastodon/pull/20628))
- Change table header to be sticky in admin UI ([sk22](https://github.com/mastodon/mastodon/pull/20442))

### Removed

- Remove setting that disables account deletes ([Gargron](https://github.com/mastodon/mastodon/pull/17683))
- Remove digest e-mails ([Gargron](https://github.com/mastodon/mastodon/pull/17985))
- Remove unnecessary sections from welcome e-mail ([Gargron](https://github.com/mastodon/mastodon/pull/19299))
- Remove item titles from RSS feeds ([Gargron](https://github.com/mastodon/mastodon/pull/18640))
- Remove volume number from hashtags in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19253))
- Remove Nanobox configuration ([tonyjiang](https://github.com/mastodon/mastodon/pull/17881))

### Fixed

- Fix rules with same priority being sorted non-deterministically ([Gargron](https://github.com/mastodon/mastodon/pull/20623))
- Fix error when invalid domain name is submitted ([Gargron](https://github.com/mastodon/mastodon/pull/19474))
- Fix icons having an image role ([Gargron](https://github.com/mastodon/mastodon/pull/20600))
- Fix connections to IPv6-only servers ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20108))
- Fix unnecessary service worker registration and preloading when logged out in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20341))
- Fix unnecessary and slow regex construction ([raggi](https://github.com/mastodon/mastodon/pull/20215))
- Fix `mailers` queue not being used for mailers ([Gargron](https://github.com/mastodon/mastodon/pull/20274))
- Fix error in webfinger redirect handling ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20260))
- Fix report category not being set to `violation` if rule IDs are provided ([trwnh](https://github.com/mastodon/mastodon/pull/20137))
- Fix nodeinfo metadata attribute being an array instead of an object ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20114))
- Fix account endorsements not being idempotent ([trwnh](https://github.com/mastodon/mastodon/pull/20118))
- Fix status and rule IDs not being strings in admin reports REST API ([trwnh](https://github.com/mastodon/mastodon/pull/20122))
- Fix error on invalid `replies_policy` in REST API ([trwnh](https://github.com/mastodon/mastodon/pull/20126))
- Fix redrafting a currently-editing post not leaving edit mode in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20023))
- Fix performance by avoiding method cache busts ([raggi](https://github.com/mastodon/mastodon/pull/19957))
- Fix opening the language picker scrolling the single-column view to the top in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19983))
- Fix content warning button missing `aria-expanded` attribute in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19975))
- Fix redundant `aria-pressed` attributes in web UI ([Brawaru](https://github.com/mastodon/mastodon/pull/19912))
- Fix crash when external auth provider has no display name set ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19962))
- Fix followers count not being updated when migrating follows ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19998))
- Fix double button to clear emoji search input in web UI ([sunny](https://github.com/mastodon/mastodon/pull/19888))
- Fix missing null check on applications on strike disputes ([kescherCode](https://github.com/mastodon/mastodon/pull/19851))
- Fix featured tags not saving preferred casing ([Gargron](https://github.com/mastodon/mastodon/pull/19732))
- Fix language not being saved when editing status ([Gargron](https://github.com/mastodon/mastodon/pull/19543))
- Fix not being able to input featured tag with hash symbol ([Gargron](https://github.com/mastodon/mastodon/pull/19535))
- Fix user clean-up scheduler crash when an unconfirmed account has a moderation note ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19629))
- Fix being unable to withdraw follow request when confirmation modal is disabled in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19687))
- Fix inaccurate admin log entry for re-sending confirmation e-mails ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19674))
- Fix edits not being immediately reflected ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19673))
- Fix bookmark import stopping at the first failure ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19669))
- Fix account action type validation ([Gargron](https://github.com/mastodon/mastodon/pull/19476))
- Fix upload progress not communicating processing phase in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19530))
- Fix wrong host being used for custom.css when asset host configured ([Gargron](https://github.com/mastodon/mastodon/pull/19521))
- Fix account migration form ever using outdated account data ([Gargron](https://github.com/mastodon/mastodon/pull/18429), [nightpool](https://github.com/mastodon/mastodon/pull/19883))
- Fix error when uploading malformed CSV import ([Gargron](https://github.com/mastodon/mastodon/pull/19509))
- Fix avatars not using image tags in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19488))
- Fix handling of duplicate and out-of-order notifications in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19693))
- Fix reblogs being discarded after the reblogged status ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19731))
- Fix indexing scheduler trying to index when Elasticsearch is disabled ([Gargron](https://github.com/mastodon/mastodon/pull/19805))
- Fix n+1 queries when rendering initial state JSON ([Gargron](https://github.com/mastodon/mastodon/pull/19795))
- Fix n+1 query during status removal ([Gargron](https://github.com/mastodon/mastodon/pull/19753))
- Fix OCR not working due to Content Security Policy in web UI ([prplecake](https://github.com/mastodon/mastodon/pull/18817))
- Fix `nofollow` rel being removed in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19455))
- Fix language dropdown causing zoom on mobile devices in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19428))
- Fix button to dismiss suggestions not showing up in search results in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19325))
- Fix language dropdown sometimes not appearing in web UI ([Gargron](https://github.com/mastodon/mastodon/pull/19246))
- Fix quickly switching notification filters resulting in empty or incorrect list in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19052), [ClearlyClaire](https://github.com/mastodon/mastodon/pull/18960))
- Fix media modal link button in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18877))
- Fix error upon successful account migration ([Gargron](https://github.com/mastodon/mastodon/pull/19386))
- Fix negatives values in search index causing queries to fail ([Gargron](https://github.com/mastodon/mastodon/pull/19464), [Gargron](https://github.com/mastodon/mastodon/pull/19481))
- Fix error when searching for invalid URL ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18580))
- Fix IP blocks not having a unique index ([Gargron](https://github.com/mastodon/mastodon/pull/19456))
- Fix remote account in contact account setting not being used ([Gargron](https://github.com/mastodon/mastodon/pull/19351))
- Fix swallowing mentions of unconfirmed/unapproved users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19191))
- Fix incorrect and slow cache invalidation when blocking domain and removing media attachments ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19062))
- Fix HTTPs redirect behaviour when running as I2P service ([gi-yt](https://github.com/mastodon/mastodon/pull/18929))
- Fix deleted pinned posts potentially counting towards the pinned posts limit ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19005))
- Fix compatibility with OpenSSL 3.0 ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18449))
- Fix error when a remote report includes a private post the server has no access to ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18760))
- Fix suspicious sign-in mails never being sent ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18599))
- Fix fallback locale when somehow user's locale is an empty string ([tribela](https://github.com/mastodon/mastodon/pull/18543))
- Fix avatar/header not being deleted locally when deleted on remote account ([tribela](https://github.com/mastodon/mastodon/pull/18973))
- Fix missing `,` in Blurhash validation ([noellabo](https://github.com/mastodon/mastodon/pull/18660))
- Fix order by most recent not working for relationships page in admin UI ([tribela](https://github.com/mastodon/mastodon/pull/18996))
- Fix uncaught error when invalid date is supplied to API ([Gargron](https://github.com/mastodon/mastodon/pull/19480))
- Fix REST API sometimes returning HTML on error ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/19135))
- Fix ambiguous column names in `tootctl media refresh` ([tribela](https://github.com/mastodon/mastodon/pull/19206))
- Fix ambiguous column names in `tootctl search deploy` ([mashirozx](https://github.com/mastodon/mastodon/pull/18993))
- Fix `CDN_HOST` not being used in some asset URLs ([tribela](https://github.com/mastodon/mastodon/pull/18662))
- Fix `CAS_DISPLAY_NAME`, `SAML_DISPLAY_NAME` and `OIDC_DISPLAY_NAME` being ignored ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/18568))
- Fix various typos in comments throughout the codebase ([luzpaz](https://github.com/mastodon/mastodon/pull/18604))
- Fix CSV import error when rows include unicode characters ([HamptonMakes](https://github.com/mastodon/mastodon/pull/20592))

### Security

- Fix being able to spoof link verification ([Gargron](https://github.com/mastodon/mastodon/pull/20217))
- Fix emoji substitution not applying only to text nodes in backend code ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20641))
- Fix emoji substitution not applying only to text nodes in web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/20640))
- Fix rate limiting for paths with formats ([Gargron](https://github.com/mastodon/mastodon/pull/20675))
- Fix out-of-bound reads in blurhash transcoder ([delroth](https://github.com/mastodon/mastodon/pull/20388))

_For previous changes, review the [stable-3.5 branch](https://github.com/mastodon/mastodon/blob/stable-3.5/CHANGELOG.md)_
