Flag for View.SystemUiVisibility: View would like its window to be layed out as if it has requested View.SystemUiFlagFullscreen, even if it currently hasn't. This allows it to avoid artifacts when switching in and out of that mode, at the expense that some of its user interface may be covered by screen decorations when they are shown. You can perform layout of your inner UI elements to account for non-fullscreen system UI through the View.FitSystemWindows(Android.Graphics.Rect) method.

[Android Documentation]