Comment 7 for bug 1096314

I can confirm this happening to me as well. Since 12.04 LTS, through 12.10 and now 13.04, when I minimize a full screen Virtualbox instance, none of the Unity elements are redrawn properly until I click on one of them. Since 13.04 there is another "feature" present - the Virtualbox instance gets minimized (I see the animation), the host screen pops-up, and a fraction of a second later the Virtualbox screen is back. Also until I click somewhere - then it goes back to host screen view.... Really annoying :(