Instrumentation affects test results.

[jwaliszko]

Hi, first of all thank you for blanket.js. I'm using it since some time and it works brilliant for me. Nevertheless, I've just faced an issue.

I have the following test:

operating on such a DOM:

I'm using Chutzpah (v 4.2.4) test runner from @mmanela to run the tests.

When executing it without the coverage support, the test passes. When blanket coverage is on, the test fails:

Could you help me to determine what can be the source of the problem?
Thank you very much in advance.

I'm attaching the repro.zip.
This is an archive containing tiny, yet complete, sample which allows you to reproduce the error shown above - execute test.ps1 script to see it.