[FF] Permission denied is thrown when preview is used for page with document.domain

[Jakub Ś]

Problem can be reproduced in Firefox only from CKEditor 3.6.4 rev. [7527] in both CKE 3.x and 4.x

1. Create subdomain.example.com and example.com domains
2. Put ckeditor with attached sample under subdomain.example.com
3. This sample has document.domain='example.com’ set
4. Load attached sample from subdomain (​http://subdoamin.example.com/ckeditor/samples/replacebycode2.html)
5. Press preview

Result: Permission denied error is thrown.

Error: Permission denied to access property '_cke_htmlToLoad'
Code: doc.write( window.opener._cke_htmlToLoad );
URI: ​http://www.subdomain.example.com/ckeditor/plugins/preview/preview.html

[Vikas Kumar]

I am facing the same problem. Do we have any solution for this?