Hey,
I only wanted to mention what I see / noticed as different.
And there's a pattern as well - with small playlists, all is fine still.
In Library & very large auto-playlists in tracks view, these now jitter/stutter when dragging (i.e. click & hold a columns separator, move left right). Doesn't affect the functionality, but again, thought I'd mention it as I have not noticed it before.
c.