Actually the hotbar menu does work but using it is extremely user unfriendly. To invoke the menu you must press down. I get that down is a good way of to dismiss the menu but I think there is no reason that just pressin or swiping sideways doesn't invoke the menu.
Nothing extracted yet.
Your system information
Please describe your issue in as much detail as possible:
The Hotbar Menu virtual menu binding in Steam Input doesn't work. I have tested this with Arch Linux and Steam Deck
Steps for reproducing this issue:
Observed results
Nothing appears on the screen. Neither does the trackpad vibrate to indicate that it's just a visual glitch and something's happening in the background. Basically it doesn't work
Expected results
The Hotbar Menu should work