I dont have the insider builds so I havent tested on them. I am not even sure if MS even knows about it, you would think they would by now. But MS is also no longer giving any change logs with their updates, so yeah its going to be a wait and guess game.
I am really really starting to hate Windows 10. Thing is, it is here to stay, the app sotre is what they want. I think MS needs to get some new people in.
Shane