I just upgraded to 10166 from 8.1 (Cyan) on my 1520 and noticed these problems. Not sure if they are known:
- Groove music seemed to crash multiple times while doing 'Adding music' (about 8000 songs, I'm a CD collector
)
- Groove music doesnt display album name on car display (2013 Prius) but other music apps do (Hey DJ)
- Groove music doesnt display album images that are present, when XBOX music did just fine.
- Opening the mail app from a new mail notification doesnt open to the correct account.
So far I'm hating Groove music's UI. Everything is smaller and harder to get. And side swiping for the different modes is so much better than hamburger button.