id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12986	Undo doesn't work when editor starts empty in source mode	Jakub Ś		"1. Put attached file into editor samples folder.
2. Editor is empty and starts in source mode.
3. Switch to wysiwyg by clicking Source button.
4. Type e.g. ABCDE
5. Press UNDO button
Result: Text is not removed.
"	Bug	confirmed	Normal		General	4.4.0