title: ListPicker text obscured by other text on Windows Phone 7
body: <p>I am using the ListPicker from the Windows Phone Toolkit.  It is setup very basically, but for some reason, the items in the popup are always obscured by anything below them, like this:</p>
  
  <p><img src="https://i.stack.imgur.com/r3QRN.jpg" alt="enter image description here"></p>
  
  <p>Here, the text “jburchel” was beneath the ListPicker, and _http://science.nasa.gov/me  Was a ListPickerItem.  You can see how the underlying text box appears normally but the ListPickerItem is below.  I tried changing the order on the XAML of the ListPicker and TextBlock, but it didn't help.  I have tried lots of combinations of settings, messed around with the template, but this has persisted.  Does anybody know this problem?</p>
  
  <p>Here is an example of ListPicker XAML I use.  It is extremely basic.</p>
  
  <pre><code>           &lt;toolkit:ListPicker HorizontalAlignment="Left" Margin="24,41,0,0" Name="txtUrl" 
                    VerticalAlignment="Top" Width="434" Cursor="IBeam"&gt;
              &lt;toolkit:ListPickerItem Content="http://rss.cnn.com/services/podcasting/studentnews/rss"/&gt;
              &lt;toolkit:ListPickerItem Content="http://science.nasa.gov/media/medialibrary/2010/10/28/podcast.xml"/&gt;
              &lt;toolkit:ListPickerItem Content="http://www.sciencemag.org/rss/podcast.xml"/&gt;
          &lt;/toolkit:ListPicker&gt;
          &lt;TextBlock Height="30" HorizontalAlignment="Left" Margin="33,19,0,0" Name="textBlock1" Text="Podcast URL:" VerticalAlignment="Top" /&gt;
          &lt;TextBox Height="72" HorizontalAlignment="Left" Margin="15,141,0,0" Name="txtUser" Text="jburchel" VerticalAlignment="Top" Width="460" /&gt;
  </code></pre>