Workspace overview sticks on cross-workspace drag'n'drop

[humanplayer2]

In 12.04.

Problem:
The small compiz window showing all four workspaces which occur when one switches between them using keyboard shortcuts sticks, i.e. does not go away, unless I change workspace again.

The window is not dead: if I open a program on any workspace, it shows up in the small 2x2 grid.

Cause:
This occurs if I mark a file, hold the mouse button and drag it to another workspace, changing workspaces using shortcut keys.

Reproduce by:
Take any file on the desktop and "lift it" (move it a little, but do not release mouse button), and the change workspace using shortcut keys, then release mouse key.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/943190/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]