Thanks for clearing that up. My error was to have only drag operations in mind where letting go mid-way is not an option. So, yes, a dragged window stays where it is. I was thinking about a dragged item and how it bounces back to its original position or ends up in the wrong container if you let go too soon.
Not to rathole on this - but now I'm confused. When I click-drag something on macOS, I can click once, and repeatedly swipe with my index finger, lifting it from the touch pad each time to continue. This is true with every operation I can think of - selecting text, dragging windows, dragging items, etc...
In theory, a three finger-swipe is basically GUI equivalent to a click and drag - so the behaviors should be identical.
Under what scenario have you found them not to be?