Html code making space on description page

[brunello]

Hi everyone,
on previously zencart, 1.3.8a, inserted on description page html code like follow and never had got problem.

<table width="80%" height="5%" border="0" bordercolor="white" align="center">

<tr><td align="left"> MYTEXT </td><td align="left"> MYTEXT </td></tr>

</table>

A simply table filled on html editor and copy paste on product page inside zencart admin page.
Now update myzencart on lastets ver 1.3.9h and product page give me a blank space, some empty row like table row.
if i make a 40 row table, empty space got 40 blank row.

see attachment jpeg
Do you have any idea what ???
thanks bruno