1. Track-count will not be updated:
When I remove a track from a playlist, the track-count behind the playlist's name won't be updated.
2. Playlist-view won't be updated when removing a track:
When I remove a track from the actually shown playlist, it won't disappear.
3. Playlist won't disappear in file properties:
When I remove a playlist from File properties > Playlists, it won't disappear - except when no more playlists are available, then the whole tab disappears.