I have Virtualbox working quite well in Ubuntu 12.10 but it has an odd "bug" when I minimize, say, XP VM, back to the Ubuntu OS from full screen mode. When I click the "-" symbol at the bottom of the screen, the VM mimimizes briefly then "bounces back" into the VM! When I double click the VM, then it minimizes properly into the host Ubuntu OS. Is there a reason why it is doing this. I haven't seen this occur with Ubuntu 12.04 host OS (or pervious versions) nor with Mint Cinnamon nor Mint Mate. Is this a case where Ubuntu and Oracle lack effective communication or is there some setup mods I can do on my notebook PC?
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