Well, "accidentally" also communicates that it was done automatically without human review and that human review ended up reversing the decision. I don't think splitting hairs with "well technically they intended for it to happen automatically so it couldn't have been accidental" adds to the discussion. Automatic processes absolutely make mistakes.

This should be obvious after 10 seconds of thought, but here's an example: https://en.wikipedia.org/wiki/Scunthorpe_problem