Hey guys. I've seen and experienced that sometimes I go to the pits and FFB is totally disable. What I found fixes it ASAP is to alt tab RF2 and it comes right back, even when you are already driving the car out in the track. Hope this can help people. I know that when doing competitive racing it will lose you time, but better that then no FFB I guess, wich will also make you drive worse and loses you more time then doing this.
There is a reset ffb button you can assign which is probably a much better option then trying to alt tab while being in the car.
alt-tab should work if you use the two window'd options. But I don't think it will if you have the 3rd option chosen. Fullscreen, I think, Many users prefer that option due to a reduced lag.