I managed to screenshot the problem just in time. In general there seem to be more flicker and slower animations in the gnome 3 fallback desktop than in gnome 2.
** Attachment added: "screenshot.png" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/969986/+attachment/2974892/+files/screenshot.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/969986 Title: In gnome-fallback the animation when opening an application from the panel ends with a ugly black square To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/969986/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs