[IE8] Predefined style pruned by the editor

[Olek Nowodziński]

1. Use samples/replacebyclass.html and standard-all build of the editor.
2. Set the following HTML and selection

   <h1>x^</h1>
   

3. Apply "Special Container" style from styles drop-down.
4. Switch WYSIWYG->SOURCE->WYSIWYG

Expected: Contents hold the style.

<div style="background:#eee; border:1px solid #ccc; padding:5px 10px">x</div>

Actual:

<p>x</p>

Notes:

• It works in dev code.
• It works in other browsers.

[Piotrek Koszuliński]

I recalled that this issue may already be reported.

[Jakub Ś]

Problem can be reproduced from CKEditor 4.1 in IE8. It looks like ACF issue and I have not found a duplicate for it.