Comment 120 for bug 734908

After observing compiz behavior for a long time, I think Unity is being drawn in the root window (the first/top layer of the x11 display) first, before anything else. Because unity is drawn directly to the root window, no other windows, screen changes, lockscreens, screensavers, etc etc can ever be drawn over it. Shouldn't unity, like everything else, be drawn in a composite overlay window?