Fluid Vertex Animation has misoriented normal

[Vuthric]

Picture is World Normal view in Unreal. On the right side is a sphere with correct world normal for reference.

Basically everything works except the decoded normal. I checked Pack Normal into Alpha in Houdini.

Am I making some obvious mistakes?

Thanks!

[Vuthric]

Currently I'm using additional normal map texture which has correct results (middle)

[aiiven]

I experience the same issue.