Index: /CKEditor/trunk/_source/plugins/selection/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/selection/plugin.js	(revision 7444)
+++ /CKEditor/trunk/_source/plugins/selection/plugin.js	(revision 7445)
@@ -344,5 +344,5 @@
 						// Now the range restore is disabled, so we simply force IE to clean
 						// up the selection before blur.
-						CKEDITOR.env.ie && doc.getWindow().on( 'blur', function()
+						CKEDITOR.env.ie && editor.on( 'blur', function()
 						{
 							// Error proof when the editor is not visible. (#6375)