title: WPF: Why does text and elements blur if I use dropshadow effect on a parent item
body: <p>If I add a <code>DropShadowEffect</code> to an parent element the text of the child elements are blurred. Why?</p>
  
  <pre><code>&lt;Grid&gt;
      &lt;Grid.Effect&gt;
          &lt;DropShadowEffect /&gt;
      &lt;/Grid.Effect&gt;
      &lt;Grid.ColumnDefinitions&gt;
          &lt;ColumnDefinition /&gt;
      &lt;/Grid.ColumnDefinitions&gt;
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition /&gt;
      &lt;/Grid.RowDefinitions&gt;
      &lt;TextBlock Background="White"&gt;Test&lt;/TextBlock&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p>Update:</p>
  
  <p>with shadow</p>
  
  <p><img src="https://i.stack.imgur.com/UIRyJ.png" alt="enter image description here"></p>
  
  <p>without shadow</p>
  
  <p><img src="https://i.stack.imgur.com/NNIQy.png" alt="enter image description here"> </p>