about 1 month ago - magazine2 - Direct link
Originally posted by Tserleg: The frontal armament used to be angled slightly downwards, which was historically accurate and gave the plane a very distinctive "feel" when aiming (and a slightly lower risk of frontal collision) ; these last days however, the armament seems to have been aligned to a rather dull 0º. Do we know anything about this ?
Personal opinion : please bring back the angled cannon and MGs !

Hi! I see others have answered you, thanks guys! It was changed recently, here's the update notes for it if you are interested:

https://steamcommunity.com/games/236390/announcements/detail/4195740727954787335

Now, in mouse aiming mode, the flight direction is set by matching the aiming reticle with the mouse cursor. Previously, the direction was set by matching the longitudinal axis of the aircraft with the mouse cursor.