Over-escaping html on timeline page?

http://meta.stackexchange.com/posts/80046/timeline

some of html source are like this for above

<td class="qablock">
    &lt;span class=&quot;qacell&quot;&gt;&lt;a onclick=&quot;gotoRevision(&#39;rev-866752011-04-08-09-33&#39;)&quot;&gt;&lt;span class=&quot;qablock&quot;&gt;A&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;
</td>