The

 macro cannot be used inside table cells. This issue is somewhat related to CONF-790, where 

couldn't be used in lists.

The following example:

foo

is rendered as:
<table class="wikitable">
<tbody><tr>
<th> test </th><td> <div class="preformatted"><div class="preformattedContent"></div></div></td>
</tr>
</tbody></table><pre>foo</pre>

The

panel is displayed inside the table cell (as desired), but the actual content is rendered below the table.