Well, if you lean forward to be able to look further back like IRL, this shape error is obvious and has nothing to do with the zoom setting.
This bug simply doesn't belong to an otherwise great add-on.
BTW, the default viewpoint isn't at the correct position.
1. Too far to the right (as the pilot should sit centered behind the stick)
2. Too far aft, (if you compare the eye position with the external view)
In that case of a realistic view point both gaps in the fuselage are highly visible and are really distracting.