diff --git a/packages/playwright-core/src/server/dialog.ts b/packages/playwright-core/src/server/dialog.ts
index 40039c032289b..1346581193642 100644
--- a/packages/playwright-core/src/server/dialog.ts
+++ b/packages/playwright-core/src/server/dialog.ts
@@ -123,7 +123,7 @@ export class DialogManager {
         hasHandlers = true;
     }
     if (!hasHandlers)
-      dialog._close().then(() => {});
+      dialog._close().catch(() => {});
   }
 
   _dialogWillClose(dialog: Dialog) {
diff --git a/tests/library/chromium/connect-over-cdp.spec.ts b/tests/library/chromium/connect-over-cdp.spec.ts
index 9b1eafb0af965..64b4c1be9d543 100644
--- a/tests/library/chromium/connect-over-cdp.spec.ts
+++ b/tests/library/chromium/connect-over-cdp.spec.ts
@@ -161,6 +161,9 @@ test('should connect to an existing cdp session twice', async ({ browserType, mo
     expect(context1.pages().length).toBe(2);
     expect(context2.pages().length).toBe(2);
 
+    await page1.evaluate(() => alert('dialog race'));
+    await expect(context2.pages()[0].title()).resolves.toBe('');
+
     await cdpBrowser1.close();
     await cdpBrowser2.close();
   } finally {