I didn't say it was, I said an angular displacement might be possible if it was considered that the glass may not have perfect optical qualities, no way of really finding out so it's a dead issue.
The point I started making at the beginning of the thread should really be the consideration, that's a mighty long nose, I agree with IvanK that from the photos there really isn't a bar at all but geometrically I'd really like to see how that nose affects things.
There is however a fairly good argument for some refraction, with or without the bar then I think this should be considered.