Fallout Shelter does not detect Steam Controller gamepad input (588430)

Compatibility Report

• Name of the game with compatibility issues: Fallout Shelter
• Steam AppID of the game: 588430

System Information

• GPU: GeForce
• Driver/LLVM version: nvidia 396.54
• Kernel version: 4.16
• Link to full system information report as Gist: https://gist.github.com/mikix/176ee75025e7da1e917c1c562d4a95d9
• Proton version: 3.7-6-beta

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.

Log

steam-588430.log

Symptoms

No gamepad input from a Steam Controller is recognized. If I switch the controller bindings to use mouse/keyboard settings, it does recognize that.

Note that "gamepad" is the default/recommended binding for a Steam Controller for this game.

Reproduction

• Launch Fallout Shelter and try to use a Steam Controller, configured as a gamepad.
• Notice that the game recognizes no input.

Start by reviewing the attached steam-588430.log and reproducing Fallout Shelter (Steam AppID 588430) with Proton 3.7-6-beta and a Steam Controller configured as a gamepad. Done means the game recognizes Steam Controller gamepad input without requiring mouse/keyboard bindings.