How does genre section work

In the main section Genres, some of the choices have songs that will play and others do not, for example easy listening doesn’t do anything when I click it, drop down will not open, etc… Is this an issue on my end? In the edit option it looks the same all the others.

Do you have any albums in that genre.
I have noThing tagged as…

I’m not sure? so it is based on my particular library? I wish is would work as a discovery tool for streaming service as well.