We've successfully upgraded our Mastodon server to v4.6.0-alpha.7+mementomods-2026-05-02, along with Mastodon Bird UI 4.0.0-alpha.7 (nightly).
This update includes today's latest daily build with 207 new commits from upstream since mementomods-2026-04-05.
What's new in Mastodon core - These are the changes Mastodon Team have introduced us in the latest nightly version we are running:
✨️ New features
- Collections continue to mature - per-user maximum number of collections, "Featuring you" tab, "Follows you" badge in lists, federated `Flag` activities, "added to collection" notifications with full context menus, and viewing unlisted collections on your own Featured tab
- New collection editor - final design for account dropdown menu, account search dropdown, accounts editor page, "Must follow" section in suggestions, grouped Combobox results
- Profile redesign keeps polishing - full join date (currently in modal), animated/transparent avatars, illustrations using CSS vars, control over follower/following list visibility, bot toggle in editing, advanced view overflow fix
- Server thumbnail alt text - admins can now define alt text for the server thumbnail, surfaced in the frontend
- Fallback attributes for new and infrequent notification types so no event renders as an empty card
- Keyboard-only modal form submission
- Extended date display for relative times when `feature_approval` cooldown applies, including new `AccountMigration#remaining_cooldown_days` helper
- New `domain_variants` helper on `DomainNormalizable` for IDN handling
🔧 Fixes & improvements
- Several profile bugs - minor visual glitches, gap in fields layout, dropdown blocking missing the confirmation modal, follower/following list error for accounts that never posted
- Custom emoji not appearing in autocomplete
- Stale collections list after deleting a collection, broken client-side collection routes, collection item limit, multiple occurrences of the same user in a collection
- Quote blocked user issue
- Bio line clamping in `AccountListItem`
- Combobox loading state and confusing admin list hover states
- Streaming server uses WHATWG URL API instead of deprecated `url.parse`
- Signature verification fixes carried from previous nightly
- Importing emoji loader statically inside the inline worker (Vite 8 compatibility)
- Hero image radius brought back into repo
📦 Dependency updates
- Ruby 4.0.3 (from 4.0.2), Puma 8.0.1, Vite 8.0.10, Node.js 24.15, Yarn 4.14.1, Sidekiq 8.1.3, propshaft, formatjs, opentelemetry-ruby, and dozens of smaller bumps
🐦⬛ Mastodon Bird UI 4.0.0-alpha.7 (nightly)
- Fix duplicate profile buttons after upstream class name change
- Remove padding-top from `account__header__buttons` on viewports under 420px
- Apply `--font-size` variables to display name, form field wrapper, app form link text, and simple_form hints so accessible themes scale them correctly
- Move field list row-gap 5px to all viewports
- Fix follows you badge and pinned badge styling
- Fix familiar followers margin spacing
- Fix profile badge and username spacing
- Map `--color-text-brand` to `--color-accent` for consistent link colors
🔧 Mementomori.social Mastodon fork fixes
- Fixed private mention styles and follow requests styling
- Fixed emoji worker loader using a static import for Vite 8 inline worker compatibility
- Fixed trends alignment and trends counter missing `tagName` after the upstream `FormattedMessage` wrapper removal
- Fixed uncaught `play()` promise rejections on autoplay-blocked browsers
Source code: https://github.com/mementomori-social/mastodon
As always, if you notice anything unusual or buggy, please reach out to me or any of the admins. Enjoy your time here, and feel free to message me with any questions or thoughts. 
If anything feels off, please let us know!
#MementoMoriSocial #Mastodon #MastoAdmin
Rolle Laukkarinen
Zotheca
Veera Laukkarinen
