Latest update of libwacom from 1.3 to 1.4 has made my (wired) xbox controller stop working in Fallout 4 completely, the steam controller continued ok as did the keyboard.
I downgraded to 1.3 (using the downgrade package from aur) and it works again.
I haven’t seen anything on the Arch forums (I read it every day) and searching libwacom doesn’t result in anything useful.
I don’t know why a wacom tablet file would mess with an xbox controller so I first tried to remove libwacom but it is a dep of libinput so I stopped there.
I also tried booting with the LTS kernel with no success.