This issue was fixed in Verify 30.20.0 (EmptyFiles 8.14.0). Thank you!
This repo was created to show a bug in Verify.Xunit. If you want to verify a byte[] no *.verified.* file is created automatically.
Execute the ArrayCalculatorTests.TestThat3ElementsAreCorrectlyCreated test which works fine (a *.verified.* file was created).
Execute the ArrayCalculatorTests.TestThat5ElementsAreCorrectlyCreated test which reproduces the problem: no *.verified.* file is created and so the test stays red.