Apple music library does not show artwork when library exists on an iTunes server (eg NAS)
When I use my library on disk, I see all of my artwork. But when I switch to a library on an iTunes Server (running on Synology NAS) - I get the music but no artwork. Every single music file has had the artwork manually added to the file (a very long process to accomplish.)
The music library is about 1TB so I'm not interested in "re-importing" what is already there - given that the music albums display using the iTunes server - just the artwork does not show.
This is macOS Monterey and Synology DS1819 running their latest NAS OS an iTunes Server app.
MacBook Pro 16″, macOS 12.2