title: Android studio preview pane not rendering ActionBar?
body: <p>I'm running the latest version of android studio ,Problem is the preview pane does not render the ActionBar when any of the AppCompat themes are used, if i change the theme of the preview pane it works fine(Not change actual theme) ,but is there any discepency in doing this,</p>
  
  <p>my <em>styles.xml</em> is as follows</p>
  
  <pre><code>&lt;resources&gt;
  
      &lt;!-- Base application theme. --&gt;
      &lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
          &lt;!-- Customize your theme here. --&gt;
      &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>when the preview pane is set to AppTheme ,the ActionBar ain't shown ,however it works fine in my device and AVD,</p>
  
  <p><img src="https://i.stack.imgur.com/JiwTT.png" alt="No Action Bar shown"></p>
  
  <p>As you can see this makes it  hard to debug and test the  ActionBar</p>
  
  <p>Please suggest some fix to this and how exactly does a AppCompat theme differ from an ordinary one?,I'm just an android beginner .</p>
  
  <p>Thanks!</p>