Incorrect del behaviour in table cell with list inside

[Piotrek Koszuliński]

Paste this HTML to the editor:

<table border="1" cellpadding="1" cellspacing="1" style="width:500px">
	<tbody>
		<tr>
			<td>
			<ul>
				<li>foo</li>
				<li>bar</li>
			</ul>
			</td>
			<td>OOO</td>
		</tr>
	</tbody>
</table>

Place caret after "bar". Press delete.

Expected: nothing happened

Actual: "OO" moved from second table cell to the first one and error on the console.

Reproducible on all browsers.

[Jakub Ś]

Problem can be reproduced from CKEditor 3.6.4 rev. [7540] in all browsers in both CKE 3.x and 4.x (v4).

NOTE: joining elements on del introduced in rev. [7537]