I can't speak for the new platform, but I had an issue with Spotify playing after I deleted my iTunes library from the phone. Basically without a single item on iTunes stored in the phone the iPhone player was disabled it seems. So I bought an album on iTunes and bingo, it was able to read Spotify again. Probably not the same issue, but thought to mention that!
You can control spotify using the car controls when streaming over Bluetooth, you just can't view anything but the current track.
Facelift MMI? To my knowledge there is no such thing...Is this on the facelift MMI with CarPlay?
Defo can't do it on MMI 4G, unfortunately. (At least I can't. No track select, skip etc. All has to be from the phone)
Facelift MMI? To my knowledge there is no such thing...