So I took Precision with Jhin (trying out "The Fast" build) and I got like a bajillion AD from my passive. I'm gonna do some more testing in customs to see if it's specific to precision tree or if it's just from attack speed in general. But please disable this character.
Edit: nevermind, it actually happens without any bonus attack speed. It gives him +7500% AD if that number is helpful. I mean, Rito, you could have at least made it +4444% AD. geez.