title: jQuery 1.8+ breaks sortable list scrolling inside absolute positioned element with bottom: 0
body: <p>Using jQuery 1.7.2 I was able to drag sortable elements inside an absolutely positioned element with bottom: 0; But upgrading from jQuery 1.7.2 to 1.8 causes the following jsfiddle to not work:</p>
  
  <p><a href="http://jsfiddle.net/m765z/3/" rel="noreferrer">http://jsfiddle.net/m765z/3/</a></p>
  
  <p>The container never scrolls. If you switch back to 1.7.2, it scrolls. </p>
  
  <p>I can't find an update in the jQuery changelog, and I'm not finding similar bug reports in jQueryUI. </p>
  
  <p>Trying to figure out why it broke and how to fix it.</p>