Games launched with proton do not detect controllers

Compatibility Report

• Name of the game with compatibility issues:
  Burnout Paradise
  Dragon Quest XI
• Steam AppID of the game:
  24740
  742120

System Information

• GPU: 1050ti
• Driver/LLVM version: nvidia 396.54-6
• Kernel version: 4.18.9.arch1-1
• Link to full system information report as Gist:
  https://gist.github.com/Tuerai/1ea2f0b4552e4d33fc8406c29cf4f599
• Proton version: 3.7-6

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

steam-742120.log

Symptoms

Tested with an Xbox One S controller, and a PS Dual Shock 4 controller, both connected wired. They work in native steam games. They work in games where I use Lutris with WINE. They work in Steam Big Picture Mode. They are not detected at all in games I launch through proton. Have tested in Burnout Paradise and Dragon Quest XI.

Reproduction

I have steam installed on Arch Linux. I have launched it as both "Steam Native" and as "Steam Runtime" with the same behavior on both (works in BPM and not detected by Proton-launched game).

I tried both with and without xboxdrv/ds4drv installed, and had the same behavior as well.

Start by reviewing the attached steam-742120.log and reproducing the issue with the Xbox One S or DualShock 4 in Burnout Paradise or Dragon Quest XI under Proton 3.7-6. Compare behavior with Steam Big Picture Mode and native games. Done means identifying why controllers are not detected in Proton-launched games and documenting a verified resolution.