I used to contemplate similar situations. For example, a stationary person on a bike at the top of a steep driveway that's perpendicular to the vehicle's driving direction. But after seeing the video of the Arizona incident I stopped. It's too soon to consider these corner cases when some systems on the public road can't even slow down for a person in front of the fucking vehicle.

That's because waymo is playing chess while uber plays checkers. For waymo, these corner cases probably matter. Uber is not actually pursuing self driving tech, they are pretending to do so to defraud investors. Their troubles aren't representative therefore.