Ticket #19925: 19925.diff

wp-admin/js/widgets.dev.js

@@ -253 +253 @@
                         title = title.replace(/<[^<>]+>/g, '').replace(/</g, '&lt;').replace(/>/g, '&gt;');
                         $(widget).children('.widget-top').children('.widget-title').children()
                                 .children('.in-widget-title').html(': ' + title);
+                } else if ( typeof title != "undefined" ) { // empty string
+                        $(widget).children('.widget-top').children('.widget-title').children()
+                                .children('.in-widget-title').empty();
                 }
         },