diff --git a/docs/_static/extensibility-directory.js b/docs/_static/extensibility-directory.js
index 597b475..7f08580 100644
--- a/docs/_static/extensibility-directory.js
+++ b/docs/_static/extensibility-directory.js
@@ -324,8 +324,10 @@ window.onload = function () {
   const searchParams = new URLSearchParams(url);
   const filterType = searchParams.has("app") ? "app" : searchParams.has("tag") ? "tag" : "";
 
-  const filter = searchParams.get(filterType).split("-").join(" ");
-  filterList(filter);
+  if (filterType) {
+    const filter = searchParams.get(filterType).split("-").join(" ");
+    filterList(filter);
+  }
 };
 
 /**
@@ -342,7 +344,9 @@ function updateSearchParam(name, value) {
   value = value.replace(/\s/g, "-").toLowerCase();
 
   searchParams.set(name, value);
-  window.location.search = searchParams;
+
+  const url = window.location.pathname + "?" + searchParams.toString() + window.location.hash;
+  window.history.replaceState({ name: name, value: value }, "", url);
 }
 
 /**