"Insert column before/after" on split cell

[Krzysztof Studnik]

Environment

IE6/7, Opera

TC

1. create table with header row and split one header cell vertically

sample code:

<table align="center" border="1" cellpadding="1" cellspacing="1" style="width: 50%; height: 40px" summary="Summary">
	<caption>
		Caption</caption>
	<thead>
		<tr>
			<th rowspan="2" scope="col">
				Header1</th>
			<th scope="col">
				Header2</th>
		</tr>
		<tr>
			<th scope="col">
				Split header2^</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>
				&nbsp;</td>
			<td>
				&nbsp;</td>
		</tr>
		<tr>
			<td>
				&nbsp;</td>
			<td>
				&nbsp;</td>
		</tr>
	</tbody>
</table>
<p>
	&nbsp;</p>

1. Set caret in Split header2^
2. select from menu Column -> Insert column before

Expected result

Column is inserted between two existing columns

Actual

Column is inserted as first column in table, and before existing two columns

Same thing happens when Insert column after is used.

[Jakub Ś]

This TC is applicable for all browsers and I was able to reproduce it from CKEditor 3.0

[Jakub Ś]

#8622 may be related.

[Jakub Ś]

Most likely related or even a duplicate of #13729.