That's known upstream as pointed by Elijah: http://bugzilla.gnome.org/show_bug.cgi?id=332385, marking as confirmed according to that
** Bug watch removed: GNOME Bug Tracker #http://bugzilla.gnome.org/show_bug.cgi?id=332385 http://bugzilla.gnome.org/show_bug.cgi?id=http://bugzilla.gnome.org/show_bug.cgi?id=332385 ** Bug watch added: GNOME Bug Tracker #332385 http://bugzilla.gnome.org/show_bug.cgi?id=332385 ** Changed in: metacity (Ubuntu) Status: Needs Info => Confirmed -- screen flicker when opening background windows https://launchpad.net/bugs/33879 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
