Why can't I change the pause key binding?

[Fulano]

The game says to press a new key, but whatever I press the dialog box closes and the mapped key doesn't change.

I'd love to have it set to my mouse button 4 or 5, or maybe the space bar if it's not used elsewhere.

Is this a bug maybe?

[GoogleFrog]

Maybe. Try editing steamapps\common\Zero-K\LuaUI\Configs\zk_keys.lua directly with some new pause bindings. Add a line saying {"pause", "<your key>"},

[Fulano]

What would be the names for the mouse buttons or space bar? I've tried "space" and " " but neither of those worked. Also mouse_4 and mouse4.

It seems there is a wider problem with the binding though because I couldn't get any of the keys to actually change to the extra moue buttons or the space bar.

Capslock will map, but not actually work when pressed. I'm not extremely familiar with all the default keys, I mostly just want to be able to pause without having to reach across the keyboard.

[GoogleFrog]

It looks like if you type /keydebug ingame and press F8 you can read the hex codes of any keypress. Mouse presses don't appear there so you might need to look into AutoHotkey. Space is a modifier key and Capslock is weird, so I expect that they would both require the hex values. The ingame UI for keybinds seems to be handling pause with normal keys correctly.