HTML tables not put into tables

PDFview and tcpdf seem to be working just fine. But, a simple test table in a simple page did not work.

<table>
<tr>
<th>test</th>
<th>test</th>
</tr>
<tr>
<td>test</td>
<td>test</td>
</tr>
</table>

The table is not rendered. The output looks like this:

test
test

test
test

Drupal looks to be stripping out the html tags. I've set the filter default to full html (no improvement). I've set this as a bug, but it may be a configuration problem on my end. Any suggestions?