Backspace stops working when working with nested list

[Krzysztof Studnik]

Basing on #6159, and connected to #6236 While #is fully reproducible under IE7, under IE8/doc mode IE8, the same steps work in different way:

Steps to reproduce

• Click bullet icon in editor
• Type 'test1' , press enter
• Indent the bullet
• Type 'test11' , press enter
• Type 'test12' , press enter
• Type 'test13'
• Move cursor behind test12
• Press enter 3 times
• Press backspace 4 times

Expected Result

Cursor should be back at the end of 'test12'

Actual

• After pressing backspace for the 4th time, cursor is set in an empty line.
• Pressing backspace more times, does not work
• empty bullet line is placed below 'test12'

It works this way since v3.4

[Krzysztof Studnik]

Empty bullet and line

[James Cunningham]

Here is a simpler test case:

1. Paste in the following code:

<ol>
	<li>line 1
		<ol>
			<li>line 2</li>
		</ol>
	</li>
	<li>line 3</li>
</ol>

2. Place the cursor at the start of the last list item.

3. Click backspace.

Result: Nothing happens. (Reproduced on Firefox 3.6.15)

[Jakub Ś]

Example provided by jamescun hasn't worked in Firefox since CKEditor version 3.0, but it works in IE

[Garry Yao]

The Backspace behavior are not managed by the editor thus could vary from browsers.