This should hopefully be fixed now.
Hey, sorry for the late response (didn't see the email notification!). Thanks for the reply but unfortunately it doesn't seem to be working still.
Just to clarify, It's a wireless Xbox One controller (connected through wireless dongle), I start the game up (with the controller already connected), use the keyboard in menu to select Settings->Input->Select controller->XBOX One S controller #1 but there's no response. I can see that the buttons are assigned there too. I wonder if the fact that it's wireless (not bluetooth) makes a difference?
Anyway, thanks again for the reply :)