Error in console after removing formatting and disabling selection as a list item.

[Artur Delura]

Browsers: Chrome, FF and IE9+

1. Open editor with following content and selection:

   <ol>
   	<li>hello</li>
   	<li>moto</li>
   	<li><strong>[:D]</strong></li>
   </ol>
   

2. Click "Remove format" button.
3. Press "Ordered List" or "Unordered List" button.

Actual result:

There is an error in console: TypeError: node is null range.js:1724

this.setStart( node.getParent(), node.getIndex() );

[Jakub Ś]

I was able to reproduce this problem from CKEditor 3.0 in every browser except IE8.

[kkrzton]

For html like this (with :D selected):

<ol>
    <li>hello</li>
    <li>moto</li>
    <li>:D</li>
</ol>

During element manipulation (e.g. list/unlist) selection is bookmarked as follows:

<ol>
    <li>hello</li>
    <li>moto</li>
    <li><span id="cke_bm_204S" style="display:none">&nbsp;</span>:D<span id="cke_bm_204E" style="display:none">&nbsp;</span></li>
</ol>

so the bookmarks are inside li element.

When applying remove format to the above selection, bookmarks are moved outside li element:

<ol>
    <li>hello</li>
    <li>moto</li>
    <span data-cke-bookmark="1" style="display: none;">&nbsp;</span>
    <li>:D</li>
</ol>
<span data-cke-bookmark="1" style="display: none;">&nbsp;</span>

and so it breaks further processing.

[kkrzton]

This issue does not occur in IE8.