There is a little annoying problem with Playlists (Global enabled), which I think could be solved easily.
When I select a playlist for playback with a normal left click (Windows client), after playback commences, I am sent back to the beginning of the playlists instead of the page where I left. It can be rather annoying, especially if you have many playlists to navigate through.
On the other hand, if I select a playlist with right click, I obviously remain in the same page.