Ticket #28889: 28889.patch

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

@@ -615 +615 @@
                          * Handle clicks for up/down/move on the reorder nav
                          */
                         $reorderNav = this.container.find( '.widget-reorder-nav' );
-                        $reorderNav.find( '.move-widget, .move-widget-down, .move-widget-up' ).on( 'click keypress', function( event ) {
+                        $reorderNav.find( '.move-widget, .move-widget-down, .move-widget-up' ).each( function() {
+                                $( this ).prepend( self.container.find( '.widget-title' ).text() + ': ' );
+                        } ).on( 'click keypress', function( event ) {
                                 if ( event.type === 'keypress' && ( event.which !== 13 && event.which !== 32 ) ) {
                                         return;
                                 }