diff --git a/lib/polyfills.js b/lib/polyfills.js
index 30e0a61..86f6d13 100644
--- a/lib/polyfills.js
+++ b/lib/polyfills.js
@@ -287,6 +287,14 @@ exports.Github_enableDiffButton = jss`
       for (let button of document.getElementsByClassName("load-diff-button"))
         button.removeAttribute("disabled");
     }, {once: true});
+  // TEMPORARY: hard-disable Turbo navigation to prevent memory leaks in Pale Moon
+  document.addEventListener("DOMContentLoaded", () => {
+    Turbo.session.elementIsNavigatable = (e) => false;
+    Turbo.session.formMode = "off";
+    Turbo.session.willFollowLinkToLocation = (l, ll, e) => false;
+    const FrameElement = document.createElement("turbo-frame").constructor;
+    FrameElement.delegateConstructor.prototype.shouldInterceptNavigation = (e, s=null) => false
+  });
 `
 
 exports.Element_attachShadow = jss`