id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
13146	Widget plugin/WIdget API does not support IE9 quirks mode	Richard Franks		"The widget plugin appears to be relying on CKEDITOR.dom.element's find and findOne methods, which use querySelector and querySelectorAll, respectively, of the Selectors API(http://www.w3.org/TR/selectors-api/).  It appears the Selectors API is not available in IE9 quirks mode.  

Using the attached ckeditor project and a simple http server like Python 3.0 http.server...

1) Browse to index.html

Notice that toolbar plugins are not enabled.  There are also console errors.
SCRIPT438: Object doesn't support property or method 'querySelectorAll' 
element.js, line 1897 character 5
"	Bug	closed	Normal		UI : Widgets		invalid		Richard Franks