I hate to burst the New Scientist's bubble, but this is nothing new. We have had systems for decades that operated under "Fire and Forget". We have missles that either go to a pre-designated point or chase a heat or radar signature once they are fired.

Human soldiers kill civilians and other soldiers on the same side. It is called "friendly fire". It is horrible, and should be avoided, but humans are more likely to make this kind of mistake more than a computer or AI model.