diff --git a/app/assets/javascripts/discourse/app/lib/render-tags.js b/app/assets/javascripts/discourse/app/lib/render-tags.js
index d4aebe57edc..6f8aedf9e9f 100644
--- a/app/assets/javascripts/discourse/app/lib/render-tags.js
+++ b/app/assets/javascripts/discourse/app/lib/render-tags.js
@@ -17,6 +17,11 @@ export function addTagsHtmlCallback(callback, options) {
   callbacks.splice(i, 0, callback);
 }
 
+export function clearTagsHtmlCallbacks() {
+  callbacks = null;
+  priorities = null;
+}
+
 export default function (topic, params) {
   let tags = topic.tags;
   let buffer = "";
diff --git a/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js b/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
index a7b2cb44568..975e67078ed 100644
--- a/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
+++ b/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
@@ -69,6 +69,7 @@ import {
   clearTagDecorateCallbacks,
   clearTextDecorateCallbacks,
 } from "discourse/lib/to-markdown";
+import { clearTagsHtmlCallbacks } from "discourse/lib/render-tags";
 import { clearToolbarCallbacks } from "discourse/components/d-editor";
 
 export function currentUser() {
@@ -194,6 +195,7 @@ export function testCleanup(container, app) {
   clearTextDecorateCallbacks();
   clearResolverOptions();
   clearLegacyResolverOptions();
+  clearTagsHtmlCallbacks();
   clearToolbarCallbacks();
 }