HTTP response header does not contain textual phrase of status code.

Expected response: "HTTP/1.1 200 OK"
Received response: "HTTP/1.1 200"

Tested URL: localhost:8080/

RFC: https://tools.ietf.org/html/rfc2616.html#section-6.1

"6.1 Status-Line

The first line of a Response message is the Status-Line, consisting
of the protocol version followed by a numeric status code and its
associated textual phrase, with each element separated by SP
characters. No CR or LF is allowed except in the final CRLF sequence."