title: fb.ui feed dialog not working well on IOS
body: <p>I used FB.ui to create a share dialog.
  Here my coffeescript code:</p>
  
  <pre><code>FB.ui
    method: "feed"
    link: "facebook.com"
  , (response) -&gt;
    if response and response.post_id
      console.log("shared")
  </code></pre>
  
  <p>It works well on desktop browser and android but it doesn't work well on IOS (Safari &amp; Chrome).</p>
  
  <p>Problem is:</p>
  
  <ul>
  <li><p>when i didn't sign in my facebook account and then I click share, it will redirect to new tab and request to login, after that I can share.</p></li>
  <li><p>but when my facebook account sign in ready and then I click share, it doesn't show share dialog. it show only blank page.  </p></li>
  </ul>
  
  <p>Anyone ever meet this? How can I solve this??? </p>