Ticket #11371: 0005-Fix-memory-leaks-in-update-replace-in-IE.-Closes-11.patch

a/src/dom.js

@@ -996 +996 @@
-  };
-}
-
+if (Prototype.Browser.IE) {
+  $w('update replace').each(function(method) {
+    Element.Methods[method] = Element.Methods[method].wrap(
+      function(proceed, element, content) {
+        $(element).childElements().each(function(child) {
+          Event.stopObserving(child);
+        });
+        proceed(element, content);
+      }
+    )
+  })
+}
+
-Element._returnOffset = function(l, t) {
-  var result = [l, t];
-  result.left = l;