I don't drive much on two lane roads, but I did yesterday and I see what others are experiencing. I was in my neighborhood on a two lane well marked road and a pickup truck came around a bend in the road about 150 feet ahead of me. We were both going about 25mph, both were in our lanes and not weaving toward the center line. My Y did a hard deceleration and turned the steering wheel sharply to the right when the pickup was about 100 feet away. My car was nearly stopped when I took over.
Not sure if this is considered pb, depends on how pedantic one chooses to be. It was obvious what triggered it, but the pickup was never threatening. Considering how well the recent update handled the really phantom braking I was seeing daily I would anticipate the car should learn to handle these other situation in time.