Wow, you are right! I can confirm this here with apparently everything installed by default in System/[Preferences|Administration]. Of note, things added later can be dragged just fine (awn-manager, ccsm). Also of note, "Help and Support" and "About Ubuntu", in the System menu, are draggable, while "About Gnome" is not.
Windows definitely do not need to explicitly support this, I have no idea what the issue is. ** Changed in: compiz-fusion-plugins-main (Ubuntu) Importance: Undecided => Low Status: New => Confirmed -- Certain windows cannot be dragged across workspaces in Expo view. https://bugs.launchpad.net/bugs/235600 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs