This is a ported cs2 behaviour from rex to cs3 runtime. (Spline-Path-Movement).
Why did you remove this in debug panel?
i.imgur.com/P2jgIZz.png
And you should use id="Rex_Spline" for c2 capx compatibility.
Sorry, i'm forget the debug panel. I'll look at that for the next update.
I don't use the Rex_Spline id because i'm add some own features for later releases.
Well If you add more stuff I wanna see that plugin for C2 too.