When you remove all tracks and the playlist (select all, delete, and clear list), the bottom right section of Track Information remains.
Further, upon restart, that information shows up again, but also in the Playlist, even though I "cleared the playlist before restart.
See the below pic...
Also, I did this several times with the "stable" release 78**... However, I didn't notice this happening, though I wasn't overly paying attention, so maybe it did, but I think I would have noticed it? So, might want to verify whether it's a new bug or not with beta.