I am running Windows 7 on a MacBook Pro connected to a Kensington Universal Multi-Display adapter. When I have a WPF application on the monitor it doesn't display correctly. WPF applications will not repaint themselves except for the title bar. When I drag the app over there and release the drag the application looks fine, but I can't interact with it because it won't repaint itself. If I make another window come on top of it, I have to drag the WPF application to a different monitor to get it to repaint.
How can I fix this?