I've noticed another issue with Apple Music (besides the missing like button).....as it's playing music, there's the "plus sign" in the control panel that's supposed to indicate if you already have this song in your library or not. I'm running into mulitple examples where the song is already in my library, but the + is there to indicate it's not in my library. In fact, I can play one of my own Apple play lists in the car....and all the songs in the play list are by definition already in my library.....but the control panel gives me the option to add them to the library. A few times, I went ahead and hit the + sign to add them to the library, then when home I go on my Mac into Music, and the song is in there twice.....once the original, plus the new one I added from my car.
Strange......by the way, anyone out there using Spotify in their Tesla.....does that app have like and dislike buttons?