Thank you, lifesaver!
I want to add one thing too. For people working on Windows the OS injects mouse events (often press AND release events) before the press event of the touch. In my case it means if I meant to scroll, a click-event was quickly injected before scroll.
For me it helped to set ‘Allow Right click drag’ to ‘false’ in the ScrollBox, this at least got rid of injected mouse events for touch and helped the logic.