It won’t even let me upload the image but why does the back door not want to close on 377 BML services Really?? This issue has been around since TSW2 for crying out loud!
You mean this? The only workaround you can do now is "hijack" the unit when an AI driver takes over the service. If you spawn straight into the service then the game prepares the train incorrectly thus leaving the rear door open: This is at Redhill I think