Primitives / Multifractal properties => Warp => Relative anisotropy

For “Multifractal” ( no matter the " Noise type"), Warp 's “Relative anisotropy” slider has no effect (with both simple or complex “pertub” settings)

You have to have Position - Anisotropy Higher or Lower than 0 for Warp - Relative Anisotropy to work.

Thx Ty !