Apple Music ratings not saving

I recently upgraded a 2015 Macbook Pro 13" from Catalina to Monterey and have a new problem in Apple Music. While playing an album and adding new ratings with hearts or stars, all or most of them disappear after moving through different sections of the app or focusing and using another app with Music in the background. I cannot tell what the mechanism is other than it is not time-based (at least consistently) and happens whenever the album page is not visible. I wish Music was updated more frequently as this is not the first serious bug involving my library. These problems (e.g. frequent Error 9039 preventing adding new music) likely involve the iCloud Music Library service, but anything more specific is above my paygrade.