As reported by @Simon W, certain context menus do not go 'back' to the correct menu context:
"Start from Music -> Genres&Tags -> (any tag) -> either Album Artists or Composers-> (any artist) -> back button. At this point, I’m back to either Album Artists or Composers, whichever I chose earlier. At least that is shown in the dropdown. However, look closer to the artists being shown. It’s the same list of artists as All Artists. You can pick All Artists now and see that the content doesn’t change."
To be resolved for next software update.
"Start from Music -> Genres&Tags -> (any tag) -> either Album Artists or Composers-> (any artist) -> back button. At this point, I’m back to either Album Artists or Composers, whichever I chose earlier. At least that is shown in the dropdown. However, look closer to the artists being shown. It’s the same list of artists as All Artists. You can pick All Artists now and see that the content doesn’t change."
To be resolved for next software update.