Ticket #42506: 42506.diff

src/wp-admin/js/customize-nav-menus.js

@@ -556 +556 @@
                         if ( '' === itemName.val() ) {
                                 itemName.addClass( 'invalid' );
                                 return;
-                        } else if ( '' === urlValue || 'http://' === urlValue || ! ( '/' === urlValue[0] || urlRegex.test( urlValue ) ) ) {
+                        } else if ( '' === urlValue || 'http://' === urlValue || ! ( '/' === urlValue[0] || '#' === urlValue[0] || urlRegex.test( urlValue ) ) ) {
                                 itemUrl.addClass( 'invalid' );
                                 return;
                         }