This seemed to be caused by having multiple Window List. I had an extra one squeezed down so that it was no longer visible. When I removed second one, the visible WIndow List worked as expected
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/869535 Title: A window dragged off to another Xinerama display disappears from Window List applet To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/869535/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs