I can confirm I have once been derailed by an AI train behind me rear ending me on Harlem. This was months back so I don't have footage or anything and cannot remember the service it was on, but replicating it would probably also require replicating the red light bug I experienced prior to it, so might be difficult. I'd got stuck behind a train stuck at a bugged red light and waited a bunch of time to see if it was indeed bugged or if it cleared. Suddenly I derailed. Reloaded the save to see what happened and on the map saw the train behind me approaching up the track. went to external cams and was able to see it run right into me.