Created attachment 8361294 [details] Quicktime movie of problem This is a hard problem to describe, so I've posted a video. We have a button that when you click, it displays a dialog if you are not logged in. The australis overflow menu takes a second to go away, so it overlays the dialog. The overlay should disappear immediately when the button is clicked. There's also a second problem in this video which is that sometimes the overlay does a double paint flash.