Spirit Of Steam Ai Trains No Smock Or Chuffing Sounds

When playing TSW 2 Spirit of Steam, whether it be a mission or service mod the AI steam trains have no smock effect nether any chuffing sounds. Why is this?

 

Yep it's a known thing

 

Ieuanman It is a known problem as Knightfire1964 mentioned, but don't forget when they're running down hill they won't have a lot of smoke or chuffs because they are drifting/rolling. You would expect to see it when they're going up hill.

 

thanks you was not sure if it was known or not but glad it is