I also have the same problem on my Windows 10 Roon, I can’t delete tracks in my playlists. When I start removing the tracks, the reset button appears on top, but doesn’t do anything, but it disappears after restarting the server. I also can’t move tracks within the playlist. When I start drag one track to move It stays on top of all tracks, like I keep holding it. After some time it, the whole application crash.
So basically any playlist can’t be changed whatsoever for me.