title: Make aurelia-ui-virtualization work with tables
body: <p>I'm struggling to make Aurelia <code>virtual-repeat.for</code> work with <code>table</code> and <code>tr</code> elements. Here is my markup of the modified Users page of <a href="https://github.com/aurelia/skeleton-navigation" rel="nofollow">aurelia skeleton app</a>:</p>
  
  <pre><code>&lt;table style="width:500px; height: 200px; overflow-y:scroll; display:block"&gt;
    &lt;tr virtual-repeat.for="user of users" style="width:500px; height: 50px"&gt;
      &lt;td&gt;
        ${user.avatar_url}
      &lt;/td&gt;
    &lt;/tr&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p>When I scroll the table down, the items below aren't rendered and I see just the empty space all over. What am I missing?</p>