Another one (I think was also in 42.pre2):

If I touch a playlist that has no Options tag, it gets initialised to 0xffffffff. It should be set to zero, or (preferably IMHO) left empty.

While we're on Options, I also noticed that you can edit options in Advanced as well as in Playlist tabs of the Properties dialog, and it's not obvious which will take effect. IWBNI these two would synchronise with each other when switching between them. The same goes for other properties, too.