Windows Store (XAML) Project behaves wrong

When I create a new Monogame Windows Store (XAML) Project the default conrflower blue area is just a small line. When I resize the window everything gets even more messed up. Also I can’t see the cursor.

When I create a not Monogame Windows Store project (for example Split App) everything works fine.

I’m using VS2013 Ultimate, Monogame 3.4 and Windows 10 Build 10130