macOS Mojave, 10.14.6 on a MacBook Pro (Mid 2014 version)
Scrolling in the task list pane is fine, but two-finger scrolling using the track pad in the Gantt pane itself is unreliable. There is a tendency when doing a vertical scroll for it to also drift horizontally. And when scrolling horizontally to earlier times, it drifts back to later times after lifting your fingers off. I don’t recall if this was also an issue in version 2 or not. The same thing applies on the Resources Chart. The PERT chart scroll, on the other hand, is just really slow an unresponsive.