Deus Ex: HR keypad support buggy

[stixholder]

Compatibility Report

• Deus Ex: Human Revolution
• Steam AppID of the game: 28050

System Information

• GPU: RX 580
• Driver/LLVM version: 21.3.7-1
• Kernel version: 5.15.25-1
• Proton version: 7

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.

Symptoms

The keypad keys are not entirely recognized as KP_0 to KP_9 and so on, most only show as '???' in the keyboard settings menu.
Some keypad keys, that e. g. also act as arrow-keys, DELETE and so on (depending on NUM LOCK status), seem not to be distinguished correctly from corresponding keys, during gameplay, although differently named in the settings menu.
This is a huge problem, if you want to use keypad for gaming. For instance, KP_ENTER will not work for jumping either.

Reproduction

Just play the game

[kisak-valve]

Hello @stixholder, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to #47 (comment).