Why is it not possible in composer view to set focus to genre

As written in the header no genres to see here. After selecting a classical composer I want to see only albums with genre classical. Now I see albums of all genres, e.g. an ELP album with a track if it is composed of the selected composer.
I am sure it worked in the past, but I don‘t know with which release it goes away.

I have it. I am on Build 1310 Early Access, not the latest production release 1311
Edit: Using only Roon genre tags

Tchaikovsky too:

Do you use Roon genres or personal genre tags?
It works for me in the other direction. First select genre classical and then focus to Beethoven

It is effecting all composers. It depends if you have local library flipped on or off:

fliipped off

flipped on:

Looks like some kind of bug to me.

There is something weird. I toggled the local library on and at first I also had no genres. When I toggle focus and local off and back on again, they eventually appear.

There first time for me without toggling local/streaming button This is Beethoven , Tchaikovsky just the same behaviour.

ODD ?

I can confirm the words of tripleCrotchet-Tony. It works with global library and genres I don‘t have and I do not want to see, and works not with local library. It‘s a bug.