From your example, presuming <custom-row>
is a custom element extending <tr>
, you're trying to nest a <tr>
as a child of a custom one. The parser will throw that out.
Instead, use a type extension custom element (the is=""
) form and extend <tr>
:
<table>
<tbody>
<tr is="custom-tr">
<td>Example</td>
</tr>
</tbody>
</table>
This worked for me: http://jsbin.com/nobaqeso/1/edit