Yup have this issue here as well. I have tons of devices like throttle, joystick, xboxone controller, pedels and probably a few other devices. Unplugging ALL of them doesn't seem to make a difference. I'm not excited to uninstall all the driver hardware for them just to get this fixed so...
I do recommend a way to just clear out ALL key binds. This may fix the issue and not require a Unity patch.
Hope there is a quick remedy to this.