Apple Music Big Sur Album Artwork Cache Rebuild?
I'm using Apple Music 1.1.3.3 on macOS 11.2.3 on a late 2015 Retina iMac. I have a large Apple Music library of around 100k songs.
Yesterday, none of the album artwork would display as shown in the screen shot below. This occurs with all views, and includes both individual track artwork from local files, album artwork (as shown below), Apple Music playlist custom artwork, and the like.
Curiously, all the individual track artwork still seems to exist, as one can see, for example, in the shot below. The artwork remains in place on other devices signed in with my same AppleID (macOS, iOS), and when I use the iOS remote app I can see album artwork when searching, but not when playing a track.
I've tried restarting Apple Music, restarting the Machine, and using File -> Library -> Get Album Artwork to no avail. A smart playlist with "Album Artwork = false" has only 55 entries, which is appropriate given my large library.
My sense is that Apple Music creates a cache of this album artwork to enable smooth and fast scrolling, but that this cache has somehow become corrupted. Any idea how to get Apple Music to recreate this cache?