Request:
.ntlmAuth("****USERNAME************","**PASSWORD*********","XXXXXXXXXdomain","XXXXXHOSTXXXXXXXX")
following is the response header :
Really hard to even say if it’s a bug without knowing the input data (username, password, domain and host), a log with what Gatling sends and one with what your browser sends.
As those are private information you’ll refuse to share, that’s typically something you’ll have to investigate on your own, or contract with someone to investigate for you.