title: UWP app MainWindow not displaying the second button on the left
body: <p>I've tried various variations but when I run the app the second button of the <code>MainWindow</code> does not show. It seems I'm not quite understanding the design patterns of the app. <strong>Question</strong>: what changes should I make to the <code>XAML</code> here to have second button (titled Test2) displayed when app runs?</p>
  
  <p><strong>Remark</strong>: It's a <code>Windows 10</code> laptop. I'm using <code>VS2019</code>.</p>
  
  <p><strong>XAML</strong></p>
  
  <pre><code>&lt;Page
      x:Class="UWPTest.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:UWPTest"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      mc:Ignorable="d"
      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"&gt;
  
      &lt;Grid&gt;
          &lt;Button x:Name="btnTest" Content="Test" Margin="69,1,0,0" Click="BtnTest_Click" VerticalAlignment="Top"/&gt;
          &lt;Button x:Name="btnGetSelContSrcView" Content="Test2" Margin="69,47,0,921" VerticalAlignment="Stretch" Click="BtnGetSelContSrcView_Click"/&gt;
          &lt;WebView x:Name="wvTest" Margin="130,38,0,10" DOMContentLoaded="WvTest_DOMContentLoaded"/&gt;
      &lt;/Grid&gt;
  &lt;/Page&gt;
  </code></pre>
  
  <p><strong>Snaphot of Design View</strong></p>
  
  <p><a href="https://i.stack.imgur.com/djlU3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/djlU3.png" alt="enter image description here"></a></p>
  
  <p><strong>Snaphot Main Window after app runs</strong> [FULL Screen mode om 17" monitor]</p>
  
  <p>Note that the second button is not displayed.</p>
  
  <p><a href="https://i.stack.imgur.com/kkE43.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kkE43.png" alt="enter image description here"></a></p>
  
  <p><strong>Snaphot Main Window after first button is clicked</strong> [FULL Screen mode om 17" monitor]</p>
  
  <p><strong>Note</strong> that the first button click event displays the html on right side (as expected) but the second button is not displayed here either.</p>
  
  <p><a href="https://i.stack.imgur.com/yZxyH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yZxyH.png" alt="enter image description here"></a></p>