Xbox One Controller D-pad is mapped correctly by default, but cannot be rebound properly afterwards. Don't touch it !
(Buttons can be rebound without any problem)
Proton 6.3-3
Distro:Linux Mint 20.1
Kernel:5.8.0-48-lowlatency
RAM:32 GB
GPU Driver:NVIDIA 460.73.01
GPU:NVIDIA GeForce GTX 980 Ti
CPU:Intel Core i7-5775C @ 3.30GHz
breversa(60 reports)< 1 hour overall(an hour with Proton)