So frustrating when the "auto complete" aspect of modern car windows means I cannot easily get the window half way closed or only a crack open. But I must be in the minority on that.

I love driving with all the windows open about 1/4 or 1/2 open when the weather is nice, and that has included cars I owned and various rentals over the years. All of the cars I have owned or rented for the last couple of decades require pushing hard enough to have a kind of 'click' feeling before it does the automatically all the way open or closed thing. I'm sure some car maker has a setup that makes it easy to trigger the fully open/closed accidentally though.

Does it not work manually if you only push it slightly on your car?

Every modern car I had had two stage switches for the windows. First click meant move as long as switch is held, then stop. Second click meant move all the way down or up.