PushModalAsync on iOS results in Entry fields being IsHitTestVisible = False?

My root page is a ContentPage. I set it like this in App.xaml.cs:

    public App ()
    {
        InitializeComponent();

        MainPage = new MainPage();
    }

when i detect a user is just authenticated for the first time I forward them to a registration screen that I want to be modal using the following code:

        var editNamePage = new RegisterNameEditorPage();
        await Navigation.PushModalAsync(editNamePage);

The navigation is successful and the screen works as designed when running in the Android emulator and a physical Android device. However when I run in an iOS simulator the fields do not take any user input. It's like they are hit test invisible. Basically my app is bricked. Can't do anything. This ONLY happens in iOS simulator (havent tried it on a physical iOS device). But it works correctly on Android simulator and physical device.