Index: /CKEditor/trunk/_source/plugins/dialog/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 4726)
+++ /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 4727)
@@ -352,4 +352,6 @@
 			{
 				CKEDITOR.document.removeListener( 'keydown', focusKeydownHandler );
+				if ( CKEDITOR.env.opera || ( CKEDITOR.env.gecko && CKEDITOR.env.mac ) )
+					CKEDITOR.document.removeListener( 'keypress', focusKeyPressHandler );
 			} );
 		this.on( 'iframeAdded', function( evt )