Samsung Galaxy Note 8 here, running Oreo.
I've noticed the following in my limited testing:
-Navigation does not function as designed; if a track is playing, and I tap any of the bottom icons, it is impossible to navigate back to the Now Playing screen. I'm forced to hit back to get out of the app, then reopen. However, if no track is playing, I'm able to tap on the paused track at the bottom to resume.
-Tapping the playing/paused track at the bottom when in any of the other areas (EQ, search, etc) results in the track starting over, or in some cases another track by that same artist to start playing.
-The 3-dotted menu on the bottom right corner of the album art of the current track opens, but zero of the contained items function. When I tap any of them, nothing happens.