When I click a button to rebind it, it just assigns the mouse button (left click)

You only need to click ot once, if it binds it directly when you click then your mouse is probably double clicking
When you click the button one time, it awaits for an input and since left click is a valid input, double clicking will result in it being automatically bound to left click

While I can add a fix in order to detect double clicks and prevent it being bound in that case, this is not really an issue with the mod itself

You only need to click ot once, if it binds it directly when you click then your mouse is probably double clicking When you click the button one time, it awaits for an input and since left click is a valid input, double clicking will result in it being automatically bound to left click

My mouse doesn't double click (i think)

I can try a different mouse, but i'm pretty sure it's not the fault of my mouse

oh, nevermind, it is the mouse.

edit: wait, what? I replace the mouse, it works, i put the old one back, and it works again?

That is a bit strange, maybe your mouse is having some problems?
In any case it seem to work for you now so I will close this issue