Steps to reproduce

• The unit test TestAppDomainProcessExitEvenHandlerNotLeaking is flaky.
• Currently is the top 1 faling test in the last 30 days. Failed 20 times out of 87 runs (23% failure rate).
• And all failures have the same error message and stack trace.
• Seems to have been introduced 10/10 in Add test for the even handler leaking fix #10768.

Error Message

Assert.DoesNotContain() Failure
Found: (filter expression)
In value: Delegate[] [EventHandler { Method = Void DisposeOnShutdown(System.Object, System.EventArgs), Target = null }, EventHandler { Method = Void CurrentDomain_ProcessExit(System.Object, System.EventArgs), Target = null }]

Stack Trace

at PSTests.Sequential.RunspaceTests.TestAppDomainProcessExitEvenHandlerNotLeaking() in D:\a\1\s\test\xUnit\csharp\test_Runspace.cs:line 127

PowerShell-CI-windows - Test failure report

Expected behavior

Test results should be consistent.

Actual behavior

Test is flaky.

Environment data

Unit tests must be executed in a windows platform.