Remove white space at bottom of page xamarin.forms - xamarin.forms

Question

I have this Xamain.Forms app where I hide page title when the device orientation changes. It all works fine but on Android a white space is showing above the content when I switch to horizontal view. You can see how it looks in the pictures below.
enter image description here
enter image description here
This is my xaml code:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Kanal10Live.VideoTest">
<ContentPage.Content>
<StackLayout x:Name="VideoStack">
<WebView x:Name="Browser" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></WebView>
</StackLayout>
</ContentPage.Content>
And this is code behind:
private double width = 0;
private double height = 0;
protected override void OnSizeAllocated(double width, double height)
{
base.OnSizeAllocated(width, height);
switch (Device.RuntimePlatform)
{
case Device.Android:
if (width != this.width || height != this.height)
{
this.width = width;
this.height = height;
if (width > height)
{
NavigationPage.SetHasNavigationBar(this, false);
VideoStack.Orientation = StackOrientation.Horizontal;
}
else
{
NavigationPage.SetHasNavigationBar(this, true);
VideoStack.Orientation = StackOrientation.Vertical;
}
}
break;
}
}
The funny thing is that if I use the below code when the page initializes all is fine.
If someone can help me I would be grateful!
Peter

Answer 1

Try:
<Grid>
<WebView x:Name="Browser" />
</Grid>
Grid by default fills the full page. If you don't set any horizontal or vertical options on the web view it should fill the whole grid.