I have foliage sway shader, works well.

But when the camera moves the vertex displacement stops: and the weird thing also that if I move the camera to the right nothing seems to happen, but moving the camera only to the left causes the issue .

Googling it shows that the position node's world space takes camera position into account, and the presumed fix is to change all position nodes to absolute world space, and also make the transform node convert from absolute world to object space. But that didn't fix it sadly. Any ideas could help, thank you.