I suspect this is human error rather than a computer error. Waymo is a supervised system -- from what I've heard while there's little remote driving by humans, there is occasional real-time human labelling and confirmation. So the car likely phoned home to ask "what the heck is this?", and a human clicked on the "overtake" button or something.
>a human clicked on the “overtake” button Ok. So what are the consequences for this human operator and/or Waymo? Human drivers make mistakes all the time, it’s true. But there are consequences for those mistakes. If a human drives into the opposite lane that’s a big problem, especially if they end up causing property damage or bodily injury. Why are the same standards not being applied here?
OTOH, I doubt the operator still has a job, and Waymo is going to face significant consequences. Likely formal consequences, but if not, the punishment by the court of public opinion is going to be massive.