Problem with TS-312 - Always share Keep Alive + NTLM Authorization

We are noted that ATS-5.0.0 from GIT master couldn't authenticate with some websites that uses Authorization Header.
We always get 401 ( Unauthorized ) response.

I'm attaching two debug files. One with ATS-3.2.2 that's working and one with ATS-5.0.0 that's broken.

Almost the same records.config for both tests.

I'm looking for changes in source code too. I'll update the issue if I find an answer.

To devs: Could the question mark after the "exchange" can cause that ? This is the only modification between these two versions.

ATS-3.2.2 GET - GET http://webmail.candidomendes.edu.br/exchange?

ATS-5.0.0 GET - GET http://webmail.candidomendes.edu.br/exchange

Thanks.