I have Classic Shell installed on my new Windows 8 Pro operating system. I also installed an old copy of the game "Lemonade Tycoon" on the same computer. The default state of Lemonade Tycoon is full screen. When I ran the game, it played just fine, but the taskbar icon for Classic Shell showed in the bottom left hand corner of the game screen over the full screen game. However, it should be noted that when I played a full screen version of Plants vrs Zombies (the game of the year Steam version), I did not see the behavior in question. It appears that the issue of the Classic Shell icon showing over full screen apps does not occur in all full screen programs.