Perhaps this is the same bug as bug 89189? Try adding the following to the Device section in xorg.conf and see if it helps: Option "XAANoOffscreenPixmaps" "true"
-- Title bar not drawn on maximized windows when desktop effects are enabled https://launchpad.net/bugs/89741 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
