1 files changed, 15 insertions, 0 deletions
diff --git a/app/assets/javascripts/behaviors/load_startup_css.js b/app/assets/javascripts/behaviors/load_startup_css.js
new file mode 100644
index 00000000000..1d7bf716475
--- /dev/null
+++ b/app/assets/javascripts/behaviors/load_startup_css.js
@@ -0,0 +1,15 @@
+export const loadStartupCSS = () => {
+  // We need to fallback to dispatching `load` in case our event listener was added too late
+  // or the browser environment doesn't load media=print.
+  // Do this on `window.load` so that the default deferred behavior takes precedence.
+  // https://gitlab.com/gitlab-org/gitlab/-/issues/239357
+  window.addEventListener(
+    'load',
+    () => {
+      document
+        .querySelectorAll('link[media=print]')
+        .forEach(x => x.dispatchEvent(new Event('load')));
+    },
+    { once: true },
+  );
+};