Stale data or odd display glitches are often resolved by clearing the cache. Try this before assuming something is broken.
Browser cache
- Do a hard refresh with
Ctrl+Shift+R(orCmd+Shift+R). - If that fails, clear cached files from your browser settings.
- Try an incognito/private window to rule out extensions.
Application cache
Administrators can clear the server-side cache from Settings → Maintenance. This is safe to run at any time and only rebuilds derived data.