When playing music through the Sonos app, only tested with Spotify and Amazon as those were the two services I am using, when scrolling all the way to the end of my Playlist it seems the display of the songs gets all mixed up. It looks like I have duplicate songs in playlist but there aren't. As a further test, I added a new song to the playlist and played the last two tracks. The second to last one is incorrectly listed but does play the second to last song on my playlist. As you can see in the picture there are various duplicates that do play the song in that track number on the playlist. Not sure if anyone has a fix or if this is a visual bug that needs to be addressed. 

Edit: Not shown in the screenshot but this last segment repeats itself a little further up.