Ticket #4584: 4584.patch

_source/plugins/link/dialogs/link.js

@@ -1106 +1106 @@
                                 {
                                         if ( data.target.type != 'notSet' && data.target.name )
                                                 attributes.target = data.target.name;
+                                        else
+                                                removeAttributes.push( 'target' );
+
                                         removeAttributes.push( '_cke_pa_onclick', 'onclick' );
                                 }
                         }