diff --git a/extension/content-script.js b/extension/content-script.js
--- a/extension/content-script.js
+++ b/extension/content-script.js
@@ -607,10 +607,11 @@
         subtree: true
     });
 
-    window.addEventListener("beforeunload", function () {
+    window.addEventListener("pagehide", function () {
         // about to navigate to a different page, tell our extension that the player will be gone shortly
         // we listen for tab closed in the extension but we don't for navigating away as URL change doesn't
-        // neccesarily mean a navigation but beforeunload *should* be the thing we want
+        // neccesarily mean a navigation.
+        // NOTE beforeunload is not emitted for iframes!
         sendPlayerGone();
     });
 
diff --git a/extension/extension-mpris.js b/extension/extension-mpris.js
--- a/extension/extension-mpris.js
+++ b/extension/extension-mpris.js
@@ -98,7 +98,7 @@
 
 // when tab is closed, tell the player is gone
 // below we also have a "gone" signal listener from the content script
-// which is invoked in the onbeforeunload handler of the page
+// which is invoked in the pagehide handler of the page
 chrome.tabs.onRemoved.addListener((tabId) => {
     // Since we only get the tab id, search for all players from this tab and signal a "gone"
     playerTabGone(tabId);