It works for me in my iPhone XS. So far the beta is fine. It’s gonna take me some time to find the widget setup that works for me, though. I love the app library
My only complaint so far is not beta specific, but that there is STILL no way to sort songs in a playlist from the Music app. This is such basic functionality I can’t believe we still don’t have it. I like to have the most recently added songs at the top and Spotify does this easily. I hate having to add a song and then go to the very bottom of the list and then drag it all the way up every time I add a song (which can sometimes be a whole album at once).