The confusion, that if the car should take the lane to the right (which happens to be an offramp) or the one to the left (which happens to be the freeway's right most lane) should not be surprising to anyone.
How will the car know which one is the legitimate lane ? The car has to either choose the right line or left line as the primary line during these kind of decision making points. Quite rightly the car gives prominence to the line on the right, which I am sure is the right decision 9 out of ten times, but not an exit. Happens to be problem for both AP1 & 2
If you put on your thinking hat a bit, you won't be this frustrated.