title: Loading url in ionic shows blank screen
body: <p>I have searched on web but got nothing concrete about this issue.
  I'm using ionic v1, in which I'm loading my adfs url to ask user for login though adfs web page but only on some phones I see login page and on others I see blank screen. 
  I tried debugging it but I got nothing[only the url] constructive so far. 
  I'm loading url using </p>
  
  <pre><code>window.open("https://inve....", '_system');
  </code></pre>
  
  <p>So far we've encountered with this issue on Android phones only, but I'm targeting iPhones also.
  Any help will be appreciated. Thanks </p>