UWP Page in Monogame App, hides content behind the AppBar

I have a UWP page in a MonoGame app. The contents of which go behind the appBar. I would like to restrict it to the Red Rectangle.
The page has no MonoGame related content in it. I created a normal UWP application and it does not have this behavior.


Even on the games main page I don’t want this behavior. Is there a way to prevent it.