A related story, shortly after upgrading to the new iPHone. I noticed while driving I got a big album art preview on the Lock Screen while I was driving. However, after customising my Lock Screen it’s gone back to the small activity preview. I have tried a few changes to back, but no dice. New versions of iOS have been successively making the album art smaller and smaller, and i thought this was a return to form, but I guess it must’ve been a bug.