diff --git a/package.json b/package.json
index d95b8ee9..f9fa6bfd 100644
--- a/package.json
+++ b/package.json
@@ -74,8 +74,10 @@
     "test.atomics": "playwright test tests/integrations tests/platform --config playwright.atomics.config.ts --browser=chromium",
     "test.chromium": "playwright test tests/integrations tests/platform --browser=chromium",
     "test.webkit": "playwright test tests/integrations tests/platform --browser=webkit",
+    "test.firefox": "playwright test tests/integrations tests/platform --browser=firefox",
     "test.nextjs.chromium": "cd tests/nextjs && npm i && playwright test --config playwright.nextjs.ts --browser=chromium",
     "test.nextjs.webkit": "cd tests/nextjs && npm i && playwright test --config playwright.nextjs.ts --browser=webkit",
+    "test.nextjs.firefox": "cd tests/nextjs && npm i && playwright test --config playwright.nextjs.ts --browser=firefox",
     "benchmark": "node tests/benchmarks/run.cjs",
     "test.unit": "uvu -r tsm tests/unit",
     "tsc.watch": "tsc -w",
diff --git a/src/lib/sandbox/main-register-window.ts b/src/lib/sandbox/main-register-window.ts
index 20e7e55b..74c0d0b3 100644
--- a/src/lib/sandbox/main-register-window.ts
+++ b/src/lib/sandbox/main-register-window.ts
@@ -57,19 +57,17 @@ export const registerWindow = (
 
     const onLocationChange =
       (type: LocationUpdateType, state: object, newUrl?: string, oldUrl?: string) => () => {
-        setTimeout(() => {
-          worker.postMessage([
-            WorkerMessageType.LocationUpdate,
-            {
-              $winId$,
-              type,
-              state,
-              url: doc.baseURI,
-              newUrl,
-              oldUrl,
-            },
-          ]);
-        });
+        worker.postMessage([
+          WorkerMessageType.LocationUpdate,
+          {
+            $winId$,
+            type,
+            state,
+            url: doc.baseURI,
+            newUrl,
+            oldUrl,
+          },
+        ]);
       };
 
     history.pushState = (state, _, newUrl) => {