title: View doesnt resize on rotation
body: <p>I have <code>shared app</code> in <code>xamarin.forms</code></p>
  <p>with</p>
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Reflection.Emit;
  using System.Text;
  
  using Xamarin.Forms;
  
  namespace MyFin1.Views.Reports
  {
      public class Reports_view : ContentPage
      {
          StackLayout Lay = new StackLayout();
      public Reports_view ()
      {
          NavigationPage.SetHasNavigationBar(this, true);
          Lay.Children.Add(
                new Xamarin.Forms.Label
                {
                    Text = &quot;Мои Финансы&quot;,
                    TextColor = Color.FromRgb(200, 200, 200),
                    HorizontalOptions = LayoutOptions.FillAndExpand,
                    VerticalOptions = LayoutOptions.Center,
                    FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Xamarin.Forms.Label)),
                    FontAttributes = FontAttributes.Bold | FontAttributes.Italic,
                    BackgroundColor=Color.Aqua
                }
             );
          Button Bar_chart_go = new Button
          {
              Text = &quot;Динамика&quot;,
              BackgroundColor = Color.Red,
              HorizontalOptions = LayoutOptions.FillAndExpand
          };
          Button Pie_chart_go = new Button
          {
              Text = &quot;Структура&quot;,
              BackgroundColor = Color.Green,
              HorizontalOptions = LayoutOptions.FillAndExpand
          };
          Bar_chart_go.Clicked += Bar_chart_go_Clicked;
          Pie_chart_go.Clicked += Pie_chart_go_Clicked;
  
          Lay.Children.Add(Bar_chart_go);
          Lay.Children.Add(Pie_chart_go);
  
          Content = new StackLayout {
              BackgroundColor=Color.Maroon,
              HorizontalOptions = LayoutOptions.FillAndExpand,
  
              Children = {
  
                  Lay
              }
          };    
      }
  }
  </code></pre>
  <p>on Android emulator all works good ( when rotate screen -- view rotated)
  <a href="https://i.stack.imgur.com/QmhKB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QmhKB.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/y7FrU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/y7FrU.png" alt="enter image description here" /></a></p>
  <p>On Windows Phone (nokia 530) there is problem:</p>
  <p><a href="https://i.stack.imgur.com/gN40A.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gN40A.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/SzVTr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SzVTr.png" alt="enter image description here" /></a></p>
  <p>In <code>MainPage.xaml.cs</code> i have <code>SupportedOrientations = SupportedPageOrientation.PortraitOrLandscape;</code></p>
  <p>If i rotate and then navigate to page all works good.
  <a href="https://i.stack.imgur.com/1yI3q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1yI3q.png" alt="enter image description here" /></a></p>
  <p>Is there way to fix it?</p>
  <h1>Additional Info</h1>
  <p>Xamarin.Forms 2.0.1.6505</p>
  <p>PS original question on <a href="https://ru.stackoverflow.com/questions/501787/%D0%9E%D0%B1%D1%80%D0%B5%D0%B7%D0%B0%D0%BD%D0%B8%D0%B5-%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0-%D0%BF%D1%80%D0%B8-%D0%BF%D0%BE%D0%B2%D0%BE%D1%80%D0%BE%D1%82%D0%B5">RU_SO</a></p>