GPU - volume render affects mesh nearby.

[Alvin_Yap]

Cpu Render:

Gpu Render:

Hey folks!

I'm just getting to grips with arnold and am testing out motion blur with volumes. I noticed that on the gpu render, the plane below the volume has some gridding artifacts. The cpu render appears to be fine. Not sure if it's a bug or not so I'm reporting it.

Please find the source file here (Frame 36): vol_test.zip

Houdini 18.5.672
Arnold 6.2.1.1

HtoA 5.6.3.0

Thanks!