Not sure if it's a bug or not, but when I disable AFB, the brake pressure keeps going back to 0.9, even if the train brake is fully released. Holding down the break release switch helps temporarily, but it never goes back to 0.0 - what am I doing wrong?
IRC that is prototypical behavior. It should release brakes when you set throttle above 10kN, (rollback protection for uphill starting)
So I did some testing this morning, and found that it only works if I put the AFB throttle to MAX (140 km/h) before I switch AFB off, then it doesn't apply any brakes. If I move the AFB lever to off before I deactivate the system, then the brakes will be applied (and stay on even if the throttle stays above 10kN).