This is the same error as two of the lights of the container cranes on American Intermodal Route.
They shine in the wrong direction, not forward but backwards.
Annoying...
For the BW9's you can shut it off so you don't see it anymore.
In config.txt under "extensions" change the "gyra" "1" to "gyra" "0".
For the time being this shut off option will do fine till someone comes with a better repair solution.