Using the trackpad to scroll through the captured data inadvertently causes zooming in and out, and vise-versa.
This is because the trackpad gesture for scrolling horizontally (two finger left or right swipe) also as a side effect triggers the gesture to zoom in and and out (two finger up or down swipe, which on MacOS trackpad is not zooming but moving up and down, zooming is accomplished using the pinch gesture).
To correct this, we'd need to add "Trackpad / Mouse" toggle, and when in Trackpad mode, the pinch gesture is used to zoom instead of the up/down gesture.
This is a very common issue in cross platform CAD programs (EasyEDA just fixed this recently, as well as Fusion 360).