id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
8350	Undo adds NBSP to empty paragraph	garry.yao		" 1. Load any of the sample page;
 1. Press enter twice at the end of first paragraph (to create two new paragraphs)
 1. Undo once
 * Actual: Checked the last paragraph, it contains a NBSP text node now."	Bug	confirmed	Normal		Core : Undo/Redo	3.0