setting the + and - functions to the + and - bottons that are used for changing tile placer size prevents that other functionality from being used.

For now, you'll need to remap the inaccessible functionality to other keys.

Todo: Likely due to consuming value needing to be changed. Or some logic to be added to call secondary binding. Script.raise_event / LuaCustomInputPrototype.

It might be possible to fake this by focusing on a text field and abuse on_gui_text_changed, because text field/box does capture keyboard input unlike anything else the api offers. Comes at the drawback of capturing all keyboard input, so player can't move etc until the field is unfocused.

I doubt anyone is using the calculator during a firefight. A calc toggle might work. Already got one to control the gui itself.