Title. When using mod menu you can't configure it, neither can you set a keybind in controls. It's annoying cause I am not too great with configuring from the config file

Cursor config button appear in controls menu of settings. You are not supposed to edit file config manually.

Not being able to open config from mod menu is an oversight, I haven't thought of that as it is one of my first crossplatform mods

Fixed in 2.0.0 beta
Mod is moving to different repository
https://github.com/JumperOnJava/CustomCursor