In vanilla, in the Virtual Arsenal, and inside the cockpit of the Buzzard, when you look behind the seat a large part of the mesh that should prevent you from being able to look directly backwards is absent. This includes the rear of the cockpit and the empennage of the aircraft.

While not normally significant, the absence of half of the plane causes a break in immersion, which TrackIR users will commonly see - and possibly abuse using the free rearward view.