Start button on controller/gamepad does nothing / does't pause the game

[BinToss]

This is an issue in the base game. Start button bindings were never set up in the PC ports. As such, Escape is the only binding for Pause and it's hardcoded.

On top of this, "Start" button may or may not behave differently in menus than it does on the OG Xbox releases.

Workarounds

Wrappers for modern gamepads/controllers (e.g. DS4Windows, Steam controller settings, x360ce, Xidi, X2DCLI, et cetera) will allow you to bind your Start button to the Escape keyboard input.

The Steam workaround is partly documented here: #31