diff --git a/app/assets/javascripts/commons/polyfills.js b/app/assets/javascripts/commons/polyfills.js
index 589eeee96954b07f43f0bf71da0b08cb7c0847ef..742cf490ad2fd61ec3c1cc10fc5181e9f1b03ad3 100644
--- a/app/assets/javascripts/commons/polyfills.js
+++ b/app/assets/javascripts/commons/polyfills.js
@@ -8,6 +8,7 @@ import 'core-js/fn/object/assign';
 import 'core-js/fn/promise';
 import 'core-js/fn/string/code-point-at';
 import 'core-js/fn/string/from-code-point';
+import 'core-js/fn/string/includes';
 import 'core-js/fn/symbol';
 import 'core-js/es6/map';
 import 'core-js/es6/weak-map';
diff --git a/changelogs/unreleased/50281-js-pages-do-not-load-on-windows-8-ie-11.yml b/changelogs/unreleased/50281-js-pages-do-not-load-on-windows-8-ie-11.yml
new file mode 100644
index 0000000000000000000000000000000000000000..eb20e34c46639e79ee8dbcd93872160a181eac24
--- /dev/null
+++ b/changelogs/unreleased/50281-js-pages-do-not-load-on-windows-8-ie-11.yml
@@ -0,0 +1,5 @@
+---
+title: Fix broken JavaScript in IE11
+merge_request: 21214
+author:
+type: fixed