fix(browser): Always start navigation as root span

s1gr1d · s1gr1d · commit b061a23459da · 2025-09-15T14:48:20.000+02:00
diff --git a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/init.js b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/init.js
@@ -0,0 +1,13 @@
+import * as Sentry from '@sentry/browser';
+
+window.Sentry = Sentry;
+
+Sentry.init({
+  dsn: 'https://public@dsn.ingest.sentry.io/1337',
+  tracesSampleRate: 1,
+  integrations: [
+    Sentry.browserTracingIntegration({
+      _experiments: { enableInteractions: true },
+    }),
+  ],
+});
diff --git a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/subject.js b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/subject.js
@@ -0,0 +1,7 @@
+// Clicking the navigate button will push a new history state, triggering navigation
+document.querySelector('[data-test-id=navigate-button]').addEventListener('click', () => {
+  const loc = window.location;
+  const url = loc.href.includes('#nav') ? loc.pathname : `${loc.pathname}#nav`;
+
+  history.pushState({}, '', url);
+});
diff --git a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/template.html b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/template.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <button data-test-id="navigate-button">Navigate</button>
+  </body>
+  </html>
diff --git a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/test.ts b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/interactions-navigation-click/test.ts
@@ -0,0 +1,45 @@
+import { expect } from '@playwright/test';
+import type { Event as SentryEvent } from '@sentry/core';
+import { sentryTest } from '../../../../utils/fixtures';
+import {
+  envelopeRequestParser,
+  getFirstSentryEnvelopeRequest,
+  shouldSkipTracingTest,
+  waitForTransactionRequest,
+} from '../../../../utils/helpers';
+
+sentryTest(
+  'click-triggered navigation should produce a root navigation transaction',
+  async ({ getLocalTestUrl, page }) => {
+    if (shouldSkipTracingTest()) {
+      sentryTest.skip();
+    }
+
+    const url = await getLocalTestUrl({ testDir: __dirname });
+
+    await page.goto(url);
+    await getFirstSentryEnvelopeRequest<SentryEvent>(page);
+
+    const interactionRequestPromise = waitForTransactionRequest(
+      page,
+      evt => evt.contexts?.trace?.op === 'ui.action.click',
+    );
+    const navigationRequestPromise = waitForTransactionRequest(page, evt => evt.contexts?.trace?.op === 'navigation');
+
+    await page.locator('[data-test-id=navigate-button]').click();
+
+    const interactionEvent = envelopeRequestParser(await interactionRequestPromise);
+    const navigationEvent = envelopeRequestParser(await navigationRequestPromise);
+
+    // Navigation is root span, not a child span on the interaction
+    expect(interactionEvent.contexts?.trace?.op).toBe('ui.action.click');
+    expect(navigationEvent.contexts?.trace?.op).toBe('navigation');
+
+    expect(interactionEvent.contexts?.trace?.trace_id).not.toEqual(navigationEvent.contexts?.trace?.trace_id);
+
+    // does not contain a child navigation span
+    const interactionSpans = interactionEvent.spans || [];
+    const hasNavigationChild = interactionSpans.some(span => span.op === 'navigation' || span.op === 'http.server');
+    expect(hasNavigationChild).toBeFalsy();
+  },
+);
diff --git a/packages/browser/src/tracing/browserTracingIntegration.ts b/packages/browser/src/tracing/browserTracingIntegration.ts
@@ -536,6 +536,9 @@ export const browserTracingIntegration = ((_options: Partial<BrowserTracingOptio
         _createRouteSpan(client, {
           op: 'navigation',
           ...startSpanOptions,
+          // Navigation starts a new trace and is NOT parented under any active interaction (e.g. ui.action.click)
+          parentSpan: null,
+          forceTransaction: true,
         });
       });
 
