Noticeable on quite a few PS4 autorack services Change to Rear View camera , ( to see if the banking locos are sync with throttle ) But the camera does not go to rear, it goes about 3/4 of the way down the consist.
I believe I heard during a stream once, that on long trains, the end of the train is literaly out of the game created world at that point. That's probably the reason
On PC in case like this you need to reset camera position [Ctrl][0] Don't know is it possible to reset on PS.