This is fixed in the RC in the sense that it can be used now, but it still has a problem: When you've scrolled over to the right and select something, the scrollbar jumps back to the left and you have to manually scroll it back to the right to be able to see what's going on at the 'current depth'. So as you go deeper and deeper into the folder hierarchy, you have to select the new folder, then scroll back to the right, select the next folder, scroll back to the right, etc, etc.