Minimum Altitude Limit Fractal Warp

[WAS]

Why does the Fractal Warp mask respond to Maximum Altitude and not Minimum?

[Dune]

I vaguely remember having noticed something like that as well, but not sure. Not even after compute terrain? Or inversely masked?

[WAS]

I vaguely remember having noticed something like that as well, but not sure. Not even after compute terrain? Or inversely masked?

Yeah. This was after compute terrain, and even multiple texture coordinates which work for texture space keys. I even tried final position to  make sure.