2R53 Paddington to Reading is bugged, there is an incoming service routed on the same line & we meet just outside Paddington. Also affects PC.
Someone has reported it in the PC section, I ran 2R53 twice, once departing on time, once I waited for the other service to arrive (it stopped at the same signal) so it seems to happen every time.
Same problem for me on xbox... But strange enough when I spawned on foot at 16:40, the problem disapeared. Maybe the other service got a little bit delayed (when I spawn on foot, I noticed all services depart from 0kph)