In general most behaviors the motion is good enough, but seldom 100% precise. I think what happens is the moveto behavior discards the overshoot.
Anyways, here's a way to do near perfect path motion so the object's stay spaced the same. They are transparent and next to each other so if it would show desync if it happens. Additionally you can toggle that disabled action to avoid even more numeric drift.
The gist is it moves in direction of a waypoint, and when the waypoint is passed it carries over the extra motion when it moves toward the next node.
https://www.dropbox.com/s/5bg83cgrpv9k8tn/node_path_follow2.capx?dl=1
Edit:
And the idea can be taken further. This one supports any speed.
https://www.dropbox.com/s/vow1i2x2rcteee6/node_path_follow3.capx?dl=1
Thank you! I will look into these examples.