I tried to create a new map in the map editor that's just been enabled... but I kept getting a blank screen. So I was about to report a bug when I realized it's just that the map was being created with no progress bar or anything - after ~ 20 sec, the map appeared. So it would be nice to get some feedback that the map is being created instead of just a black, frozen screen for those of us who aren't too good in the patience department...