There is no false positive detection possible. There are different checking methods for tools, but it's very likely AutohotKey which you're using.
You should check you system tray if you have a little "H" surrounded by a green box in you system tray. AutohotKey can start together with windows, so maybe you have it running without knowing about it.
Have you tried re-installing it? Sometimes it works that way or you just missed some some patch updates.
I did tried to reinstalled (I completely deleted the whole profile with CCleaner before I did), i checked the system tray and there are no "H". Well, I used some hotkeys for my recording software like OBS, and the mouse program razer synapse, but I don't think it effect the game, does it?