THIS.
Over the weekend I was driving on a I88 (2 lane divided for the most part) from Davenport to Chicago and while cruising in the right lane and passing by every on ramp the car would shift right due to the widened lane. Would be nice if the car stayed anchored to the center line instead of the right lane marker in those situations because some on ramp shifts were abrupt enough that I had to take over to prevent a high speed zig-zag.
It is shocking that they aren't smart enough to program AP to stay closer to the left lane marker in that case. With all the "observing" the cameras are doing, you would think they could easily do that. So either they aren't observing as well as they want us to think, or the people programming AP have literally never driven a car.