Border between rows is 1 pixel wider within nested tables

[dlom]

<table><tbody>
<tr>
<td>One</td>
<td>
  <table>
    <thead><tr>
      <th>Test 1</th>
    </tr></thead>
     <tbody><tr>
      <td>Test 1</td>
    </tr></tbody>
  </table></td>
</tr>
<tr>
<td>Two</td>
<td>
  <table>
    <thead><tr>
      <th>Test 1</th>
    </tr></thead>
    <tbody><tr>
      <td>Test 2</td>
    </tr></tbody>
  </table>
</td>
</tr>
</tbody></table>

Tables nested like this will produce an effect like this:

The extra pixel of width is between the "Test 1" and the "Test 2" of the "Two" row.

[dlom]

Just realized this is basically the same bug as Issue 328