Hello
Finally i fount a problem
Abs World Position get polygon rotation from first uv! (i think)
AND
If uv rotation not by positive uv (as it in scene by x y z) its ok, if not - its parallax renders with an issue!
You can try
BUT
My shader has 3 parallax node and become red in shader complexity (((( So i must to forget about this way…
Second
I fount build in unreal world texture coords (forget name) Whats the diffence beetwen yours? Why you created yours? Or it is yours already?