I have this really strange white light follow me around the cabin inside the BR143 but there is no light source triggering it. I don't have my flash light on and I am not under any street or rail lamps or even a station. I am speaking from the BR143 tutorial.
Following you around? That sounds like some form of ghost or apparition. More seriously though, could you post a screenshot?
Hahaha, ghosts inside? Sounds like something it would happen in TWS, while im in the cab of the 143 (the whole cab)