One oddity I've noticed is that I can ask "Hey Siri play my playlist" Siri says "Which playlist would you like me to play" I then say the name of the playlist. Siri then says "Sure, playing XXXX playlist" - and then usually plays the playlist but sometimes just goes to sleep at that point. This is after giving the correct playlist name. Very odd. I thought initially the problem was that some or all tracks were not on Apple Music, but this is not the case, because Siri happily plays my 'YMO' playlist of which 50% is vinyl or CD rips as only this band's core discography is available on Apple Music. It definitely plays tracks I uploaded. What is going on? The playlists are fine on my phone and mac and are in the cloud.