title: Facebook Share Dialog with URL Redirection not working
body: <p>I'd like to show a share dialog using URL Redirection as described here : <a href="https://developers.facebook.com/docs/sharing/reference/share-dialog" rel="nofollow">https://developers.facebook.com/docs/sharing/reference/share-dialog</a></p>
  
  <p>The example they provide is the following : <a href="https://www.facebook.com/dialog/share?app_id=145634995501895&amp;display=popup&amp;href=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2F&amp;redirect_uri=https://developers.facebook.com/tools/explorer" rel="nofollow">https://www.facebook.com/dialog/share?app_id=145634995501895&amp;display=popup&amp;href=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2F&amp;redirect_uri=https://developers.facebook.com/tools/explorer</a></p>
  
  <p>I tried to achieve the same with a custom page I created (with og meta tags), here is the code :</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
      &lt;title&gt;Test&lt;/title&gt; 
      &lt;meta name="description" content="Page description. No longer than 155 characters." /&gt;
  
      &lt;!-- Twitter Card data --&gt; 
      &lt;meta name="twitter:card" value="summary"&gt;
  
      &lt;!-- Open Graph data --&gt; 
      &lt;meta property="fb:app_id" content="762471050442760" /&gt;
      &lt;meta property="og:site_name" content="Facebook Developers" /&gt;
      &lt;meta property="og:title" content="Documentation for building software with Facebook - APIs, SDKs and Services" /&gt;
      &lt;meta property="og:type" content="article" /&gt;
      &lt;meta property="og:url" content="https://developers.facebook.com/docs/" /&gt;
      &lt;meta property="og:image" content="https://fbstatic-a.akamaihd.net/rsrc.php/v2/y6/r/YQEGe6GxI_M.png" /&gt;
      &lt;meta property="og:locale" content="en_US" /&gt;
      &lt;meta property="og:description" content="Learn how to integrate with Facebook&amp;#039;s APIs and developer tools to drive growth and engagement to your app, website or content." /&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>This page is stored at this location (fake location here) -> www.mysite.com/test.html</p>
  
  <p>Now I try to use the following link to share : <a href="https://www.facebook.com/dialog/share?app_id=MY_APP_ID&amp;display=popup&amp;href=www.mysite.com/test.html&amp;redirect_uri=www.mysite.com" rel="nofollow">https://www.facebook.com/dialog/share?app_id=MY_APP_ID&amp;display=popup&amp;href=www.mysite.com/test.html&amp;redirect_uri=www.mysite.com</a></p>
  
  <p>But I don't get the same result as the example they provide. Instead I get some image and description from another website (not at all the one I created with og meta tags).</p>
  
  <p>How can I solve that and customize my share dialog ?</p>
  
  <p>Thanks</p>