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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Position sticky does not work within table cells"
   href="https://bugs.webkit.org/show_bug.cgi?id=155496">155496</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Position sticky does not work within table cells
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Safari 9
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>OS X 10.11
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>CSS
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>vertova&#64;alice.it
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=274104" name="attach_274104" title="Test case">attachment 274104</a> <a href="attachment.cgi?id=274104&amp;action=edit" title="Test case">[details]</a></span>
Test case

If you open the attached test case and scroll down, the black box should stick to the top left, and this is how it works in Firefox. In Safari, however, it does not stick.

There is also a Stackoverflow post on this, <a href="http://stackoverflow.com/questions/28172079/safari-position-sticky-in-table-cell">http://stackoverflow.com/questions/28172079/safari-position-sticky-in-table-cell</a></pre>
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