title: Facebook share ignores custom query string parameters
body: <p>I try to share an <a href="http://example.com/article/1/?tracksrc=fbshare" rel="nofollow">URL</a> that contains query parameter in FB.</p>
  
  <p><a href="https://www.facebook.com/dialog/share?display=popup&amp;app_id=%3Capp_id%3E&amp;href=http%3A%2F%2Fexample.com%2Farticle%2F1%2F%3Ftracksrc%3Dfbshare&amp;redirect_uri=http%3A%2F%2Fexample.com%2Fclose_window" rel="nofollow">Here</a> is my share link</p>
  
  <p>Sharing works but my custom query parameter is gone and replaced with facebook query parameters in the facebook timeline something like <a href="http://%20http://example.com/article/1/?fb_action_ids=1234567890&amp;fb_action_types=og.shares" rel="nofollow">here</a></p>
  
  <p>The same problem when <code>FB.ui({ method: 'share',...</code> is used.</p>
  
  <p>It worked well on previous version of facebook sharing <em>sharer.php</em> but it's deprecated now and I have no idea how to make current share work.</p>