Performance problem with nested documents

[Teresa Monahan]

This is the same issue as in ticket #8246 which has been closed as fixed. However we can still reproduce the problem. Please either track this issue here going forward or re-open the original ticket.

To reproduce, paste the content in the attached html file into the editor in source mode and then switch back to wysiwyg mode.

IE6 throws a stack overflow error

IE 7 and IE 8 become completely unresponsive.

IE 9 is a little slow to respond after the paste but it does eventually respond to user input.

[Jakub Ś]

The results are actually the same as in #8246

I have managed to reproduce it in all IE browsers. Switch to source, paste the code form the attachment, switch to WYSIWYG:

1. IE6 - Browser crashes. Reoproducible from CKEditor 3.0.2
2. IE7 - Browser throws 'Stack Overflow' and editor crashes. Reproducible from CKEditor 3.0
3. IE8 - Browser displays info on long running script or freezes. Reproducible form CKE 3.0.2

Switch to source, paste the code form the attachment, switch to WYSIWYG, switch to source: IE9 – Page crashes. Reproducible form CKE 3.0

I have also checked the samples from rev [7235] and the same happens there also. Either the fix was not applied or something was missed in the TC tt/8246.

[Teresa Monahan]

This looks like a duplicate of #8322

[Jakub Ś]

Thanks @tmonahan.

DUP of #8322.