title: FB dialog broken (unknown skip_api_login paramenter)
body: <p>We're using FB login for a few years now, both from our Mac and Windows app.
  Since about a month ago the Windows app stopped connecting to FB, the request to FB just returns with </p>
  
  <blockquote>
    <p>skip_api_login=1&amp;error=access_denied&amp;error_code=200&amp;error_description=Permissions+error&amp;error_reason=user_denied</p>
  </blockquote>
  
  <p>The problem is probably because of the skip_api_login=1 parameter, but the thing is that it wasn't us who added this parameter - It was added by FB.</p>
  
  <p>In Mac everything works fine and we don't have this parameter.</p>
  
  <p>Did FB changed its dialog flow?, or if not, what else could have lead to this problem?</p>
  
  <p>Thank you</p>