Feature description
A toggle that will automatically hide a playlist if there are no songs in it (or unhide if songs are present).
This is to be separate from playlists that were manually set to hidden.
Problem solved
When using multiple sources, if one source is filtered out and a playlist had only contained that one source then the playlist still shows up on the playlist screen but shows no songs.
Brought benefits
This feature would remove the needless empty playlists. Or make them reappear when they are relevant.
Device type
Phone