List element disappear after making indentation

[Artur Delura]

Browsers: all

1. Load editor with following content:

<ol>

<li><h1>One</h1></li> <li>Two</li>

</ol>

2. Put caret right after "One" word
3. Click "Increase indent" button located in toolbar

Actual result: list item with word "Two" disappear

[Jakub Ś]

#11155 was marked as duplicate.

TC from that ticket:

Open browser (tested with Chrome and IE11). Open "Replace Textarea Elements by Class Name" sample (samples/replacebyclass.html). Set this content in editor:

    <ol>
    	<li>aa
    	<blockquote>
    	<ol>
    		<li>bb</li>
    		<li>cc</li>
    	</ol>
    	</blockquote>
    	</li>
    	<li>dd</li>
    </ol>

Switch to WYSIWYG mode and select [bb cc]. Press "Outdent" button. Press "Indent" button.

"dd" disappears.