ADDED POSSIBILITY TO INIT VIEW AFTER RELOADING

Use IReloadable interface for achieving it

    public partial class MainPage : ContentPage, IReloadable
    {
        public void OnLoaded()
        {
            Btn.Clicked += Handle_Clicked;
        }

        void Handle_Clicked(object sender, System.EventArgs e)
        {
            Btn.Text = (int.Parse(Btn.Text) + 1).ToString();
        }

    }

[MagicAndre1981]

ok, it works now and I have no idea why it fails. Also OnLoaded() is called on XAML change in UWP. I use public async void OnLoaded() and it works so far. I hope it doesn’t produce hangs in future.

[MagicAndre1981]

In past this caused deadlocks for me, so I try to avoid it now.