Ticket #31501: 31501.2.diff

src/wp-admin/js/customize-widgets.js

@@ -1852 +1852 @@
                         controlContainer.slideDown( function() {
                                 if ( isExistingWidget ) {
                                         widgetFormControl.updateWidget( {
-                                                instance: widgetFormControl.setting(),
-                                                complete: function( error ) {
-                                                        if ( error ) {
-                                                                throw error;
-                                                        }
-                                                }
+                                                instance: widgetFormControl.setting()
                                         } );
                                 }
                         } );