Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 4633)
+++ /CKEditor/trunk/CHANGES.html	(revision 4634)
@@ -90,4 +90,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/4673">#4673</a> : Fixed undo not available straight away if shift key is used to enter first character.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/4690">#4690</a> : Fixed the parsing of nested inline elements.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/4450">#4450</a> : Fixed selecting multiple table cells before apply justify commands generates spurious paragraph in Firefox.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/domiterator/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/domiterator/plugin.js	(revision 4633)
+++ /CKEditor/trunk/_source/plugins/domiterator/plugin.js	(revision 4634)
@@ -216,9 +216,8 @@
 						endPath = new CKEDITOR.dom.elementPath( range.endContainer );
 
-					// Drop the range if it only contains bookmark nodes.(#4087)
-					if ( boundaryNodes.startNode.equals( boundaryNodes.endNode )
-						&& boundaryNodes.startNode.getParent().equals( startPath.blockLimit )
-						&& boundaryNodes.startNode.type == CKEDITOR.NODE_ELEMENT
-						&& boundaryNodes.startNode.getAttribute( '_fck_bookmark' ) )
+					// Drop the range if it only contains bookmark nodes.(#4087,#4450)
+					if ( boundaryNodes.startNode.getParent().equals( startPath.blockLimit )
+						 && boundaryNodes.startNode.is && boundaryNodes.startNode.getAttribute( '_fck_bookmark' )
+						 && boundaryNodes.endNode.is && boundaryNodes.startNode.getAttribute( '_fck_bookmark' ) )
 					{
 						range = null;