Fluid Domain disappears in cycles viewport render I'm experiencing this weird behavior with a fluid domain.



It looks like something is occluding the object whilst there's nothing else in the scene.

Even if I apply the FluidSim modifier, I still having this issue. Here you have a Blend file to see it for yourself.



In addition, I've uploaded the original blend file plus the last 10 frames of the cached simulation. Anyway, you could make your own cache:

https://www.dropbox.com/sh/a3wplh6bo8iiz4n/AADafjpXM95iDiWZtLoGWRSqa?dl=0

EDIT: I've experienced this again even with a brand new simulation made in official Blender 2.79.
Solution - to bring Fluid Domain whole visible in a viewport:


under Render Properties > Performance > Dynamic BVH change to Static BVH






or under Object Data Properties > Normals enable Auto Smooth





I don't have an explanation for that, very precise pixel based cut looks like some kind of clipping, but I don't see any type active. Also I was thinking about some flipped normals that caused something similar to me once (that's why auto-smooth probably worked here), but since the cliping is straight, it can't be a faces of fluid sim rather than something that cross it, but there is nothing like that ... :) Did you used FlipFluid add-on for that?

So, mystery wasn't explained yet :) But probably future generations will find some useful string of meanings from my notes, that brings a light into this dark old 2.79x ... :)

Anyway I don't have this issue in 2.8x