Problems with VisualTreeHelper Hit test in landscape

I'm using the FindElementsInHostCoordinates method to find elements as the user swipes his finger across the screen. I'm noticing that it is reacting to if the phone was i开发者_Python百科n portrait. For example - As I move my finger up it moves down, and as I move my finger to the right it moves left. It also only does something if I'm in the bottom half of the phone. So I think it if finding the coordinates that I'm hitting in landscape but acting as if I was in portrait. Does anyone know why this is happening?

The host is always in portrait mode by design. However, you can read about a workaround in this blog post.