[Bug]: More Flatpak permissions needed for proper MPRIS and tray icon functionality

[ar-lex]

Preflight Checklist

• I use the latest version of YouTube Music (Application).
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.
• I understand that th-ch/youtube-music has NO affiliation with Google or YouTube

YouTube Music (Application) Version

3.6.2 Flatpak

Checklists

• I use the portable version of the YouTube Music Application.
• I can reproduce this issue in the official version of (WEB) YTM.

What operating system are you using?

Other Linux

Operating System Version

Fedora Linux 41.20241208.0 (Kinoite)

What CPU architecture are you using?

x64

Last Known Working YouTube Music (Application) version

No response

Reproduction steps

1. Enable Shortcuts (& MPRIS) plugin
2. Set Tray option to Enabled and show app
3. Add org.mpris.MediaPlayer2.YoutubeMusic.* session bus ownership permission for the application (as it is added after 3.6.2 release)

Expected Behavior

Tray icon has proper resolution and no deviations from KDE desktop settings.

MPRIS controls are functional and show current song information.

Actual Behavior

Tray icon is pixelated and its context menu has the cross instead of arrow cursor.

The only working MPRIS control is play/pause, no song information is shown.

Enabled plugins

Shortcuts (& MPRIS)

Additional Information

The following additional session bus talk permissions fixed these issues for me:

• org.kde.StatusNotifierWatcher (fixes tray icon appearance)
• org.gnome.SessionManager (makes MPRIS fully functional)