It might just be a config related bug that I've just fixed (I've fixed a lot of things today).
Edit: Uploaded beta 3, should fix a lot of issues. Things that didn't make it in were the 'not having to press enter when saving the dialog' thing, and the new displays being automatically selected when added - mostly just bugfixes instead.
I'll probably take the evening off, not really feeling up to it today. Apologies if any bugs slipped the net