Issue #1189: widget creator does not display preview, widget does not work

I am trying to test the widget offline for a class web site.

All of the information I have found so far indicates that the widget creator tool should provide a preview and I should be able to drop the code into my page.

  1. <a class="twitter-timeline" href="https://twitter.com/mathmarbles" data-widget-id="359221581723078657">Tweets by @mathmarbles</a>
  2. <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>

Any help is greatly appreciated. :)