Xamarin.Forms WindowsPhone Landscape NavigationPage shows black area - windows-phone-8.1

Question

I have a strange behaviour in my Xamarin.Forms app on the WinPhone client.
My MainPage is a NavigationPage. And when I navigate to the second page and turn the phone to landscape (also happens on the other way), the page shows a black area on the right side. It seems that the height and width properties don't get re-calculated on the device orientation change.
To reproduce this, just create a new Xamarin.Forms Blank App (Visual Studio 2013 template), Update the Xamarin.Forms nuget to the newest verson (in my case: 2.0.0.6490), and add the following to the App-Constructor:
var second = new ContentPage
{
BackgroundColor = Color.Green,
Content = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
Children = {
new Label {
XAlign = TextAlignment.Center,
Text = "Second Page"
}
}
}
};
var button = new Button {Text = "Show Second"};
button.Clicked += async (sender, args) => { await ((NavigationPage) MainPage).PushAsync(second); };
var firstpage = new ContentPage
{
BackgroundColor = Color.Blue,
Content = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
Children = {
new Label {
XAlign = TextAlignment.Center,
Text = "First Page"
},
button
}
}
};
// The root page of your application
MainPage = new NavigationPage(firstpage);
Is this a bug in Xamarin.Forms? Or miss I just something? Thanks in advance

Answer 1

I cant see any existing filed bugs on this. If it is easily reproducible as described, then create a small repro project and submit to bugzilla.xamarin.com. It will be a xf regression bug.
Thanks #Joehl - I obviously am not too great at searching bugzilla on my mobile. As mentioned this is the bug report: https://bugzilla.xamarin.com/show_bug.cgi?id=36477