In a table with cells using rowspan, trying to change a property for a cell and applying it to a column will shift the effect to the next column cell for rows after the rowspan.

Steps to reproduce

1/ paste the following code in oe
-----------------------------
<table width="100%" border="0" custom:summary="s">
<tr>
<td width="0">1-A</td>
<td>1-B</td>
<td>1-C</td>
<td>1-D</td>
</tr>
<tr>
<td width="0" rowspan="2">2-A</td>
<td>2-1-B</td>
<td>2-1-C</td>
<td>2-1-D</td>
</tr>
<tr>
<td width="0">2-2-B</td>
<td>2-2-C</td>
<td>2-2-D</td>
</tr>
<tr>
<td width="0" rowspan="2">3-A</td>
<td>3-1-B</td>
<td>3-1-C</td>
<td>3-1-D</td>
</tr>
<tr>
<td width="0">3-2-B</td>
<td>3-2-C</td>
<td>3-2-D</td>
</tr>
<tr>
<td width="0" rowspan="2">4-A</td>
<td>4-1-B</td>
<td>4-1-C</td>
<td>4-1-D</td>
</tr>
<tr>
<td width="0">4-2-B</td>
<td>4-2-C</td>
<td>4-2-D</td>
</tr>
</table>
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2/ edit A-1 cell, change the tag to table header or the class, and "apply to" to column.
3/ the 2-2-B, 3-2-B, 4-2-B cell will be affected by the change