playlists not displaying cover art

[shape5]

This just started happening recently where most, but not all playlists are no longer displaying any cover art. Where there used to be 1 or 4 covers is now the grey note icon (same as the iTunes icon) in a blank black box.  However, if i go to my profile all the playlists display the album art properly.  This is with the most recent Desktop version for Mac: 0.9.14.13.gba5645ad.

[shape5]

Restarting the app fixed the problem.  I think this happened at the same time as the playlist dragging glitch here:

https://community.spotify.com/t5/Help-Desktop-Linux-Mac-and/Dragging-full-albums-into-playlists-on-M...

Both occured while the app was open. Suddenly these 2 functions stopped working without changing anything on my end.  The other thing that occured at this same time is that the column sorting of all my playlists was reset to default, which is really unacceptable.