title: ScrollView Overlap
body: <p>I try to put a <code>ScrollView</code> with a <code>StackLayout</code> between two StackLayouts but when I scroll the elements inside the <code>ScrollView</code>, the items always overlap the superior <code>StackLayout</code> as seen in the image:</p>
  
  <p><a href="https://i.stack.imgur.com/WzUaR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WzUaR.png" alt="ScreenShot"></a>
  </p>
  
  <p>The code I use is:</p>
  
  <pre><code>stackPrinc = new StackLayout()
  {
      Spacing = 0,
      HorizontalOptions = LayoutOptions.FillAndExpand,
      Children = {
          ly_sup,
          new ScrollView() { Content = ly_main, IsClippedToBounds = true, BackgroundColor = Color.Olive },
          ly_inf },
  };
  </code></pre>