The post-submit test builder Mac_ios external_ui_integration_test_ios had a flaky ratio 4.00% for the past (up to) 100 commits, which is above our 2.00% threshold.

One recent flaky example for a same commit: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_ios%20external_ui_integration_test_ios/4563
Commit: e291b58

Flaky builds:
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_ios%20external_ui_integration_test_ios/4563
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_ios%20external_ui_integration_test_ios/4532
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_ios%20external_ui_integration_test_ios/4514
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_ios%20external_ui_integration_test_ios/4513

Recent test runs:
https://flutter-dashboard.appspot.com/#/build?taskFilter=Mac_ios%20external_ui_integration_test_ios

Please follow https://github.com/flutter/flutter/wiki/Reducing-Test-Flakiness#fixing-flaky-tests to fix the flakiness and enable the test back after validating the fix (internal dashboard to validate: go/flutter_test_flakiness).