ok the details:
Been using xbox music sub for 2 years, I have locally cached content that plays fine on desktop and laptop both windows 8.
windows phone music app syncs the lot.
the new xbox music app doesn't, it doesn't sync playlists and seems to lag like hell.
I have 6 playlists on xbox music (on windows 8 and they show on xbox music), they do not show on xbox music app on WP, the playlists I create on the WP app do not sync back to cloud (or windows apps).
Anyone else found this?