I only have this issue on the Class 377 with the London Commuter. Essentially the issue is whenever I start a service the back door that’s used to enable passage between 2 different Units opens and I am then unable to close it again. I don’t have this issue with the 387 only the 377 and I cannot seem to find anyone with the same problem. When AI is driving the problem never happens. And it only seems to happen at Terminus stations (Victoria and Brighton). Train pulls into the station fine moment I sit down and take over the service the door opens and stays that way. Any suggestions please?