`StepError` event not raised when a step fails because of a sub-step

[D0tNet4Fun]

Given this test case:

public class TestCase_ExpectedResult_FailedAssertion
{
    [Summary("Expected result with one failed assertion")]
    public void Summary()
    {
        TestCase.Current.Descriptor
            .AddStep(StepType.Input, "Input", Input)
            .AddStep(StepType.ExpectedResult, "Expected result", ExpectedResult);
    }

    private void Input()
    {
    }

    private void ExpectedResult()
    {
        ExpectedResultStep.Current.Descriptor
            .Assert("This should fail", () =>
            {
                Assert.Fail("Failed assertion on purpose");
            });
    }
}

Expected outcome: the expected result step fails with StepFailedException. The StepError event is raised for the same exception.

Actual outcome: the expected result step fails with StepFailedException, but the StepError event is not raised at all.