Comment 5 for bug 740104

BTW, that's probably because the task list refuses to redraw properly..this might be related. Can someone confirm that the proper tasks are shown if a redraw is triggered (go to another workspace B and go back to workspace A and see if A now lists correct windows)?

If I try to move an app to another workspace, often times I have to trigger a redraw by actually going to that other workspace and coming back to my original workspace to see the task gone from my original space.