I occasionally have problems with that too. How I solve the problem is uncheck all the galleries one by one then recheck the fly-out bar and everything is back to normal.
I have tried unchecking the fly-out and checking each gallery then dragging them closed as much as possible but that is messy. Right now I have the fly-out bar, the fill gallery and the name gallery checked and everything is fine. Hope that might work for you too.

EDIT: I have not tried running as administrator yet but just closing the program and restarting my computer didn't work for me.