From 28f96bda8415cfabd2df948114cb21c5321164c0 Mon Sep 17 00:00:00 2001
From: Hunaid Hassan <hhunaid@gmail.com>
Date: Wed, 29 Jul 2026 23:22:04 +0200
Subject: [PATCH] Re-subscribe listeners after a back-forward cache restore

WebKit reuses the document on a bfcache restore without re-running the
page's scripts, so median://events/subscribe is never re-sent and every
listener on the page goes dead. Re-subscribe on pageshow with persisted.
---
 src/utils/listener.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/utils/listener.ts b/src/utils/listener.ts
index 2d19257..68c983c 100644
--- a/src/utils/listener.ts
+++ b/src/utils/listener.ts
@@ -21,6 +21,20 @@ function setSubscription(eventName: string, subscribe: boolean) {
   }
 }
 
+// A back-forward cache restore reuses the document without re-running scripts,
+// so the page never re-sends median://events/subscribe. Re-subscribe for it.
+if (typeof window !== 'undefined' && typeof window.addEventListener === 'function') {
+  window.addEventListener('pageshow', (event) => {
+    if ((event as PageTransitionEvent).persisted) {
+      Object.keys(listeners).forEach((functionName) => {
+        if (Object.keys(listeners[functionName]).length > 0) {
+          setSubscription(functionName, true);
+        }
+      });
+    }
+  });
+}
+
 const addListener = <T>(functionName: string, callback: (data: T) => void) => {
   const functionId = createTempFunctionName(functionName);