id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
13597	IE11 Undo event bug	sunghoYu		"if test the IE10 or Chrome
test data
 1. typing : wiki
 2. Italic text click : ''wiki''
 3. undo click : wiki

if test the IE11
test data
 1. typing : wiki
 2. Italic text click : ''wiki''
 3. undo click : empty
"	Bug	closed	Normal		Core : Undo & Redo		expired