Our team and customers recently get a weird behavior on IE10, when ckeditor is reloaded, all controls of page cannot have focus anymore, even ckeditor is unfocusable, we encounter this problem only with IE10 v10.0.8 and not with IE10 v10.0.7 (last kb patch was 2862772 for IE). Did somebody encountered the same problem ?
Used version of CKEditor: 4.0.3
Update: our servers with IE9 have been updated with this patch, same problem.
Update: Test case
http://jsfiddle.net/Xf3n2/1/ , must be used with IE10 up to date (About -> Update Versions: 10.0.8 (KB2862772))
Step1: click on reload, type something in ckeditor
Step2: click on reload, focus is lost from ckeditor (it's normal)
Step3: CKEditor and textbox above cannot gain focus again
Here is a video (swf format) for people who don't have IE10 and want to see what the problem is:
Update: jsFiddle test case updated with the last version of ckeditor (4.2) http://jsfiddle.net/Xf3n2/2/ , bug still occured.