Fixed issue #30816

src/Umbraco.Web.UI/umbraco/Search/quickSearch.js

@@ -34,6 +34,7 @@
             dataType: 'json',
             matchCase: true,
             matchContains: false,
+            selectFirst: false, // FR: This enabled the search popup to show, otherwise it selects the first item
             extraParams: {
                 //return the current app, if it's not media, then it's Content as this is the only searches that are supported.
                 app: function () {

src/Umbraco.Web.UI/umbraco_client/Application/JQuery/jquery.autocomplete.js

@@ -438,6 +438,7 @@
         var length = 0;
 
         function matchSubset(s, sub) {
+            s = s.toString(); // FR: This forces the value to be a string, otherwise the indexOf() method fails on anything other but a string
             if (!options.matchCase)
                 s = s.toLowerCase();
             var i = s.indexOf(sub);