One tap always requires two taps

I've got an action set up for one tap top middle - it closes the window.

It never seems to work with one tap, I always have to do a second tap. I don't readjust where I'm tapping or anything. If I have 5-6 windows I want to close then I'll tap and it won't do anything but after the second tap the third tap will work perfectly and fourth, etc.

But then if I don't tap for 10 seconds or so then it'll require two taps again.

Not sure whats going on. I've lowered the sensitivity too but no joy. I was running the action fine on my old laptop but I just did a new setup yesterday so it's a newer version and new problem.

Do you maybe have the "double tap" need option activated in the advanced preferences?

Just checked and no that box isn't ticked.