Orfox's UserAgent different than other TBB

https://tor.stackexchange.com/questions/4890/tor-browser-user-agent-strings

Currently, TBB use Windows UA as a default.

(tested with latest TBB, if I'm a mistake correct me with latest data.) Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Firefox/38.0

However, Orfox use Android itself. Mozilla/5.0 (Android; Mobile; rv:38.0) Gecko/38.0 Firefox/38.0

Even Orfox is for Android smartphone, I think Orfox should use default TBB's UA for anti-fingerprint.

Trac:
Username: ikurua22