title: _UIFallbackPresentationViewController
body: <p>I keep getting the following error when I dismiss the dictionary that opens from tapping Define on the UIMenuController in a UIWebView on the iPhone:-</p>
  
  <pre><code>Unbalanced calls to begin/end appearance transitions for &lt;_UIFallbackPresentationViewController: 0x10ab9640&gt;.
  </code></pre>
  
  <p>And after this error, the UIMenuController stops showing up, in any UIWebView.</p>
  
  <p>Any ideas what's going on here?</p>
  
  <p><strong>UPDATE:</strong> The error actually shows up when the dictionary view is opening, not when dismissing it.</p>
  
  <p><strong>UPDATE 2:</strong> The error is app wide. Anywhere there is selectable text (i.e. webview, textview etc.) I can only use the define dictionary once. This error shows up &amp; then, I have to quit the app &amp; start it again, to use the dictionary.</p>