Input Configuration Left Mouse

So I was trying out different input configurations for my controls on rust, and I changed the primary fire from left mouse to a key on the keyboard. When I didn’t like that, I tried to change it back and when I double click to set a new key, I click, hold my left mouse button down to change it back. It doesn’t change back, and just waits till I go back to another key on the keyboard.

I have a mac computer. I read one for windows about changing cfg, but when I opened it for mac it was totally different. Please help.