Comment 7 for bug 859885

I an sorry to say that the fix is not fully functional. If you have only two windows open lying on the same desktop one over another and not maximized, then minimize the topmost one, then close the remaining one (the second of the two) on your screen and try to un-minimize the first one - it has the focus and cannot be restored. You have to click on the desktop first and then you can restore it.