title: Xamarin form display alert pop up appear 2 times
body: <p>i have created Xamarin pcl form project and ask confirmation when user press the logout button, its working fine both android and iOS but at the same i run as windows UWP project the pop up appears 2 time, i don't what happen. Please guide me some one how can i fix this issues.</p>
  
  <p>i mentioned my code below what i used in my project.</p>
  
  <p>I have used both option with await and without await keyword but no luck.</p>
  
  <pre><code>var resp = await DisplayAlert("","Are you sure want to Logout?","Yes", "No");
  if (resp)
  { 
  }
  </code></pre>