Error on mouse hover in scroll bar

[Diwas Bhattarai]

I am facing issue regarding CKEditor scroll bar on IE version 9 after enabling the script debugging(other) in IE advanced options . When ever i hover mouse on the scroll bar i get error on this code

var b=this.$;return a.type!=CKEDITOR.NODE_ELEMENT?b.contains(a.getParent().$):b!=a.$&&b.contains(a.$)

[Jakub Ś]

I have turned that option ON plus notification on every error but didn't have problems.

1. Can this be reproduced on demo page or in default CKEditor without any customizations or only in editor working with some custom plugins or your application? If second then this might be the source of the problem and not CKEditor.
2. Which editor do you use - version and plugins? If possible please attach build-config.js.
3. Have you made any changes to core code or added some custom plugins?
4. Have you got any other setting in IE except default or this is the only one?
5. Any chance for providing reduced sample HTML page showing this problem?