I think you need to look at this image. This is desired behaviour and it seems it's not replicatable in Corona scatter.
sorry for incorrect explanation, romullus is right, this is exactly what i expect from corona scatter and cannot achieve
if we use complex splines, it is impossible to achieve an accurate distribution of objects, most often it concerns curb stones and stitches, probably the forest uses a different algorithm for aligning objects and I would like to see the same in Corona scatter)
and i think there is another way to achieve this - make the curve-controllable rotation around the spline axis, like scale, twist, etc in the standart max loft compound object
PS i use v5 ofc