A path that keeps its shape because the effect would pass the geometry
budget holds a group's own placed gradients in place. A hidden path in a
layer, which the layer's bounds leave out, no longer holds them, so the
layer's gradient moves with its visible art. The art's own gradients
follow the same rule.
A freeform gradient whose points were edited keeps its vector fitted to
the bounds, so it did not count as placed and its points stayed behind
under a Transform effect and Free Distort unless another placed gradient
was in the same appearance. Its points now move like a placed gradient.