Crashing edit window
On your "pop-up" windows, to edit things like People and Groups, it would be awesome if drifting your mouse outside of the window didn't close the window losing all of your hard work. Nothing like editing 15 or so members of a group, straying a centimeter outside of the pop-up and having it close. This is THE WORST flaw I have encountered yet in this app. It took me a bunch of "Why the **** did it crash again?" to figure out it was simply going outside of the pop-up window to make it crash and lose all of your work.