Force Feedback randomly stops working. It is typically fixable by pausing or turning it off and on. This occurs in various game modes; I have experienced it in: Career Mode F1 World Grand Prix F1...
Ideas
This can be replicated if using a controller that is plugged in using a charger and your controller settings is using the USB as the main source in a multiplayer lobby pull it out game goes into Ai mode and pause menu turn controller back on you won't have FFB until you turn the controller back off and on again.
Also can be replicated if using a wheel with controller on and you press the left stick on your controller left it turns off FFB until you restart the wheel.
To avoid in the mean time I would suggest making sure your controller is switched off if using a wheel.
Hope this helps and goes towards helping getting rid of this horrible bug 🐛 CM_TGK