When trying to zoom in using a Engine application (on the Scene control) the zoom in box becomes blank. See attached image. This only occurs with Vista. Once the zoom in operation is completed that screen view is OK. It only occurs during the click and drag. I've been able to determine that it occurs when the color scheme is set to Windows Aero. If I set the color scheme to anything else the problem goes away. Anyone else seen this issue and know how to resolve it?