diff --git a/admin-dashboard/src/lib/analytics.ts b/admin-dashboard/src/lib/analytics.ts
index f6e4069..cedd3e1 100644
--- a/admin-dashboard/src/lib/analytics.ts
+++ b/admin-dashboard/src/lib/analytics.ts
@@ -112,7 +112,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId
   window.dataLayer = window.dataLayer || []
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args))
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  }
   window.gtag('js', new Date())
   analyticsContext = safeProperties(commonProperties(runtime))
   window.gtag('set', analyticsContext)
diff --git a/ai-pdf-chatbot/lib/analytics.ts b/ai-pdf-chatbot/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/ai-pdf-chatbot/lib/analytics.ts
+++ b/ai-pdf-chatbot/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/booking/lib/analytics.ts b/booking/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/booking/lib/analytics.ts
+++ b/booking/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/chatbot/lib/analytics.ts b/chatbot/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/chatbot/lib/analytics.ts
+++ b/chatbot/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/crm/lib/analytics.ts b/crm/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/crm/lib/analytics.ts
+++ b/crm/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/e-commerce/lib/analytics.ts b/e-commerce/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/e-commerce/lib/analytics.ts
+++ b/e-commerce/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/insight-flow-agent-chat/src/lib/analytics.ts b/insight-flow-agent-chat/src/lib/analytics.ts
index f6e4069..cedd3e1 100644
--- a/insight-flow-agent-chat/src/lib/analytics.ts
+++ b/insight-flow-agent-chat/src/lib/analytics.ts
@@ -112,7 +112,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId
   window.dataLayer = window.dataLayer || []
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args))
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  }
   window.gtag('js', new Date())
   analyticsContext = safeProperties(commonProperties(runtime))
   window.gtag('set', analyticsContext)
diff --git a/landing/lib/analytics.ts b/landing/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/landing/lib/analytics.ts
+++ b/landing/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/nextjs/src/lib/analytics.ts b/nextjs/src/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/nextjs/src/lib/analytics.ts
+++ b/nextjs/src/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/react/src/lib/analytics.ts b/react/src/lib/analytics.ts
index f6e4069..cedd3e1 100644
--- a/react/src/lib/analytics.ts
+++ b/react/src/lib/analytics.ts
@@ -112,7 +112,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId
   window.dataLayer = window.dataLayer || []
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args))
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  }
   window.gtag('js', new Date())
   analyticsContext = safeProperties(commonProperties(runtime))
   window.gtag('set', analyticsContext)
diff --git a/scripts/check-analytics.mjs b/scripts/check-analytics.mjs
index af0f23a..cef4c19 100644
--- a/scripts/check-analytics.mjs
+++ b/scripts/check-analytics.mjs
@@ -33,6 +33,10 @@ for (const name of templates) {
   assert(helperSource.includes('__INSFORGE_RUNTIME_CONFIG__'), `${name}: runtime config is not preferred`);
   assert(helperSource.includes('gaMeasurementId'), `${name}: runtime GA4 measurement ID is missing`);
   assert(helperSource.includes('googletagmanager.com/gtag/js'), `${name}: Google tag is not loaded`);
+  assert(helperSource.includes('window.dataLayer?.push(arguments)'),
+    `${name}: gtag commands must preserve the Arguments object expected by Google`);
+  assert(!helperSource.includes('window.dataLayer?.push(args)'),
+    `${name}: array-wrapped gtag commands are ignored by Google`);
   assert(helperSource.includes('send_page_view: false'), `${name}: automatic and manual page views may be duplicated`);
   assert(helperSource.includes("'page_view'"), `${name}: page views are not captured`);
   assert(helperSource.includes('window.location.pathname'), `${name}: page paths are not sanitized`);
diff --git a/todo/src/lib/analytics.ts b/todo/src/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/todo/src/lib/analytics.ts
+++ b/todo/src/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);
diff --git a/web-research-agent/src/lib/analytics.ts b/web-research-agent/src/lib/analytics.ts
index f6e4069..cedd3e1 100644
--- a/web-research-agent/src/lib/analytics.ts
+++ b/web-research-agent/src/lib/analytics.ts
@@ -112,7 +112,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId
   window.dataLayer = window.dataLayer || []
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args))
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  }
   window.gtag('js', new Date())
   analyticsContext = safeProperties(commonProperties(runtime))
   window.gtag('set', analyticsContext)
diff --git a/website-change-monitor/src/lib/analytics.ts b/website-change-monitor/src/lib/analytics.ts
index f6e4069..cedd3e1 100644
--- a/website-change-monitor/src/lib/analytics.ts
+++ b/website-change-monitor/src/lib/analytics.ts
@@ -112,7 +112,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId
   window.dataLayer = window.dataLayer || []
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args))
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  }
   window.gtag('js', new Date())
   analyticsContext = safeProperties(commonProperties(runtime))
   window.gtag('set', analyticsContext)
diff --git a/workspace/lib/analytics.ts b/workspace/lib/analytics.ts
index 8ae7114..24b5709 100644
--- a/workspace/lib/analytics.ts
+++ b/workspace/lib/analytics.ts
@@ -114,7 +114,9 @@ export function initializeAnalytics(): void {
 
   measurementId = configuredId;
   window.dataLayer = window.dataLayer || [];
-  window.gtag = window.gtag || ((...args: unknown[]) => window.dataLayer?.push(args));
+  window.gtag = window.gtag || function (..._args: unknown[]) {
+    window.dataLayer?.push(arguments)
+  };
   window.gtag('js', new Date());
   analyticsContext = safeProperties(commonProperties(runtime));
   window.gtag('set', analyticsContext);