Railworks America

Does any one have any ideas what going here or how to fix this. The manual for couplers does not cover this.

It shows red when it is uncoupled and changes to white when coupled and also the asset changes to green.

I get this when i use a controller or if im just using keyboard i click uncouple and re couple it will turn red. They don't talk about this in train sim general manual. But clearly they implemented in the game.