diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index 09247103d0c2..0ea79a8a78d0 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -872,10 +872,19 @@ impl WindowMethods for Window {
     // https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/
     // NavigationTiming/Overview.html#sec-window.performance-attribute
     fn Performance(&self) -> DomRoot<Performance> {
-        self.performance.or_init(|| {
-            let global_scope = self.upcast::<GlobalScope>();
-            Performance::new(global_scope, self.navigation_start_precise.get())
-        })
+        match self.current_state.get() {
+            WindowState::Alive => self.performance.or_init(|| {
+                let global_scope = self.upcast::<GlobalScope>();
+                Performance::new(global_scope, self.navigation_start_precise.get())
+            }),
+            WindowState::Zombie => {
+                // Don't store in Zombie state,
+                // as clear_js_runtime has already been called,
+                // and we won't have another opportunity to drop it.
+                let global_scope = self.upcast::<GlobalScope>();
+                Performance::new(global_scope, self.navigation_start_precise.get())
+            },
+        }
     }
 
     // https://html.spec.whatwg.org/multipage/#globaleventhandlers
@@ -1299,6 +1308,7 @@ impl Window {
         self.current_state.set(WindowState::Zombie);
         *self.js_runtime.borrow_mut() = None;
         self.window_proxy.set(None);
+        self.performance.set(None);
         self.ignore_all_events();
     }
 
diff --git a/tests/wpt/metadata/html/cross-origin-embedder-policy/blob.https.html.ini b/tests/wpt/metadata/html/cross-origin-embedder-policy/blob.https.html.ini
index 1b1c0ac98226..8fc5b2f04816 100644
--- a/tests/wpt/metadata/html/cross-origin-embedder-policy/blob.https.html.ini
+++ b/tests/wpt/metadata/html/cross-origin-embedder-policy/blob.https.html.ini
@@ -1,4 +1,5 @@
 [blob.https.html]
+  expected: CRASH
   [Cross-Origin-Embedder-Policy and blob: URL from https://web-platform.test:8443 in subframe via subframe]
     expected: FAIL