Apple Music ignors my custom genres since Golden Gate

Your genre is still saved on each track, which is why Get Info shows it; since Golden Gate the album views seem to take the catalog genre for anything tied to the cloud library, so any edit only holds until the next cloud load, the same thing Ath9 hit. Until Apple fixes it, Katalog, an app that runs alongside the Music app, has a Genres browser that reads the genre saved on the track, so your custom ones show as their own groups (I made it).

I've had this (and other issues) for weeks, following the Golden Gate update - as posted at: https://discussions.apple.com/thread/256368602

Specifically on the genre issue, I'd found that making a small change to fields such as Album Title or Album Artist subsequently forces my custom genre to appear correctly on the Album-level views (i.e. Albums, and Recently Added) - this would be an an impractical solution for several thousand albums though in any case as soon Music needs to be re-opened, following an interminably long "Loading Cloud Library" any such alterations have reverted to the Apple storefront genres.

No equivalent issue when viewing the iOS library (apart from the duplicate smart playlist problem, but that's another matter...).

Following some 'phone calls with Apple Support, they await an update from Engineering - if I hear anything will post again here.

Thanks for the reply. I've tried the changing of album artist but to no use on my side — and it's not really doable with like 59k of songs. I read your post and I have the same issue with albums showing twice as many as there are songs. I think I've tried evereything I can think oif to remedy this, but the problem persists. Good to hear you've spoken with Apple and that a fix is coming.

I've been getting annoyed by the same issue, thanks for taking it up with support