Your system information

• Steam client version (build number or date): 1785187029
• Distribution (e.g. Ubuntu): Endeavour OS (Arch Linux)
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD RX 6700 XT

Please describe your issue in as much detail as possible:

For some reason the Triple-Dots button cannot be bound. There neither exists an option anywhere to bind anything to it, nor can you select it as a button to e.g. trigger the gyro (#ControllerSettingValue_undefined):

Steps for reproducing this issue:

Try selecting the button as a gyro trigger or attempt to locate a menu to bind something to it.