[ci-scan] Recurring: WebViewDoesntCrashWhenLoadingAHeavyPageAndUsingExecutionModeSeparateProcess fails on macOS in maui-pr-uitests

[github-actions]

Summary

WebViewDoesntCrashWhenLoadingAHeavyPageAndUsingExecutionModeSeparateProcess fails consistently on macOS in the Controls WebView UI test leg, with the app becoming unresponsive and being force-terminated after each attempt.

Build Information

• Pipeline: maui-pr-uitests (definition 313)
• Build: 1484478
• Build ID: 1484478
• Branch: main
• First seen: 2026-06-24 (build 1478901)
• Occurrences: 3 in last 10 builds (1484478 on 2026-06-27, 1483327 on 2026-06-26, 1478901 on 2026-06-24)

Affected Legs

• macOS UI tests — Controls WebView task (macOS stage)
• Both test runs and retry runs fail with the same error

Error Message

Failed WebViewDoesntCrashWhenLoadingAHeavyPageAndUsingExecutionModeSeparateProcess [15 m 8 s]
  Error Message:
   The app became unresponsive and was force-terminated: App.AppState query did not complete — app is likely unresponsive
TearDown : The app became unresponsive and was force-terminated: App.AppState query did not complete — app is likely unresponsive
  Stack Trace:
     at UITest.Appium.NUnit.UITestBase.UITestBaseTearDown() in /_/src/TestUtils/src/UITest.NUnit/UITestBase.cs:line 121

Recommended Action

1. Locate WebViewDoesntCrashWhenLoadingAHeavyPageAndUsingExecutionModeSeparateProcess in src/Controls/tests/TestCases.Shared.Tests/ (or related UI test project).
2. The test uses ExecutionMode.SeparateProcess for WebView — this mode launches a secondary process and the parent app may be losing connection to it under macOS.
3. Investigate whether a recent change to WebView.maccatalyst.cs, WKWebView initialization, or process lifecycle management introduced a regression causing the separate process to hang.
4. Check if the test has a timeout guard: it runs for 15 min before the teardown query times out, suggesting the test itself is stuck waiting for the WebView to complete a heavy page load.
5. Consider whether this is related to the CookiesCorrectlyLoadWithMultipleWebViews macOS WebView instability (tracked in [ci-scan] Recurring: CookiesCorrectlyLoadWithMultipleWebViews fails on iOS/MacCatalyst in maui-pr-uitests #36117).

Generated by CI Failure Scanner · 4.5K AIC · ⌖ 13.6 AIC · ⊞ 36.2K · ◷

[PureWeen]

Closing this scanner issue as stale/non-reproducing after exact-test review. WebViewDoesntCrashWhenLoadingAHeavyPageAndUsingExecutionModeSeparateProcess passed without retry across seven complete main UI builds through 1544324, with no matching force-termination signature. No root-cause fix is claimed.