在JQuery UI Accordion Sortable中使用touchpunch无法正确使用touch

我刚刚用JQuery UI创建了一个可排序的Accordion，并使用touchpunch使触摸设备能够对部分进行排序。拖放操作很好，但我注意到"触摸以扩展"并不总是有效的，我必须触摸几次才能使部分扩展。

有人知道解决这个问题的办法吗？

<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui-touch-punch/0.2.3/jquery.ui.touch-punch.min.js"></script>
    <div id="accordion">
      <div class="group">
        <h3>Section 1</h3>
        <div>
          <p>Mauris mauris ante, blandit et, ultrices a, suscipit eget, quam. Integer ut neque. Vivamus nisi metus, molestie vel, gravida in, condimentum sit amet, nunc. Nam a nibh. Donec suscipit eros. Nam mi. Proin viverra leo ut odio. Curabitur malesuada. Vestibulum a velit eu ante scelerisque vulputate.</p>
        </div>
      </div>
      <div class="group">
        <h3>Section 2</h3>
        <div>
          <p>Sed non urna. Donec et ante. Phasellus eu ligula. Vestibulum sit amet purus. Vivamus hendrerit, dolor at aliquet laoreet, mauris turpis porttitor velit, faucibus interdum tellus libero ac justo. Vivamus non quam. In suscipit faucibus urna. </p>
        </div>
      </div>
      <div class="group">
        <h3>Section 3</h3>
        <div>
          <p>Nam enim risus, molestie et, porta ac, aliquam ac, risus. Quisque lobortis. Phasellus pellentesque purus in massa. Aenean in pede. Phasellus ac libero ac tellus pellentesque semper. Sed ac felis. Sed commodo, magna quis lacinia ornare, quam ante aliquam nisi, eu iaculis leo purus venenatis dui. </p>
          <ul>
            <li>List item one</li>
            <li>List item two</li>
            <li>List item three</li>
          </ul>
        </div>
      </div>
      <div class="group">
        <h3>Section 4</h3>
        <div>
          <p>Cras dictum. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Aenean lacinia mauris vel est. </p><p>Suspendisse eu nisl. Nullam ut libero. Integer dignissim consequat lectus. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. </p>
        </div>
      </div>
    </div>

    <script>
    $(function() {
        $( "#accordion" )
          .accordion({
            header: "> div > h3"
          })
          .sortable({
            axis: "y",
            handle: "h3",
            stop: function( event, ui ) {
              // IE doesn't register the blur when sorting
              // so trigger focusout handlers to remove .ui-state-focus
              ui.item.children( "h3" ).triggerHandler( "focusout" );
              // Refresh accordion to handle new order
              $( this ).accordion( "refresh" );
            }
          });
      });
    </script>

这是jsfiddle