PlayStation Crr: Sd40's Engine Sound Disappears After Using The Rear Camera + Horn Sound Not Working

When you use the SD40's rear camera, and then go straight back to the cab-view, the engine sound disappears completely. Only way to make it work again is restarting the engine. This happened to me, when I was starting a 7:30-service from Elkhorn City to Dante. Also sometimes the F40PH-2CAT from the Peninsula Corridor has the engine sound missing too.
Another big sound-bug with the Clinchfield Railroad's SD40 is, that in most of the time the horn doesn't work at all. It often works at first, but when you use the bell at the same time, the horn sound just disappears for the rest of the journey.
Both of these bugs appeared to me on Ps5.

 

I've found one of these problems on Clinchfield running on PC. It seems to happen at start of a service using SD40. You use camera 3 to check rear of train, then return to cab with camera 1 and there's no engine sound. Wheel against rail sounds are still present. I get around it by restarting service and avoiding use of camera 3 until later on, when it seems to work ok.