Tankstick button works in test but not in MiSTer Pi gameplay

Useful Answer

If a Tankstick button works in a PC controller/keyboard test and registers in the MiSTer Pi menu mapper, the button hardware and wiring are probably good.

When the same button does nothing in gameplay, treat it as a MiSTer/game mapping issue rather than a failed microswitch. Remap the button to a key the game/core accepts.

One confirmed case involved the Player 2 lower-right fighter button. The button tested correctly on PC and registered in MiSTer menus, but did not work in-game until the customer remapped it from [ to K.

Source Context

The customer thought a new Tankstick button was defective. After PC testing confirmed the button worked, the customer found that MiSTer Pi accepted the input in menus but not during gameplay. Remapping the button from [ to K resolved the issue.