Index: _source/plugins/blockquote/plugin.js
===================================================================
--- _source/plugins/blockquote/plugin.js	(revision 6255)
+++ _source/plugins/blockquote/plugin.js	(working copy)
@@ -95,6 +95,7 @@
 
 			var iterator = range.createIterator(),
 				block;
+			iterator.enlargeBr = editor.config.enterMode != CKEDITOR.ENTER_BR;
 
 			if ( state == CKEDITOR.TRISTATE_OFF )
 			{