I have seen this problem on a few runs I have done on ECML and BPO. I have attached a picture of the problem.
Confirmed, spawned a 101 (don't know which one, the last in the list) on ECML. Even better from the outside... Or inside. WORKAROUND: Turn off the right marker light. This is likely never gonna be fixed (same as Class 40 headcode disc lamp error).
You're playing the Steam version you say: https://www.trainsimcommunity.com/m...es/i3991-class-101-light-leak-patch-tvlgwbbpo Thank the discord community again for the fix. Well, Ed and Laika in this case.