Rendering Settings - Falloff Strength not working in Arnold

[jnicodemus]

Using Rendering Settings, falloff isn't giving a gradient to the edge of the container. I have messed with all the types. Falloff Type: Spherical will cut out a spherical core in the container but there is no gradient. That is not the behavior I have seen in the past.

FumeFX version
5.0.0-2018_10_19

Arnold version
3.2.0.2