Arnold image sequence rendering, invalid Ornatrix hair position

[1k0]

Hi Arnold users,
I'm facing quite an issue on my current projects:

In 3ds max 2020 and 2021, when rendering an image sequence using Arnold v 4.3.1.20, the fur/hair is not following the meshes deformations, it keeps its initial position. This occurs on meshes with skin, morpher, skinwrap and even simple modifiers animations like bend. Baking the deformations in a Point cache modifier won't work neither.

However, in the viewport, we can clearly see the fur following the deformation on the mesh, rendering still frames from anywhere in the animation works.
This is why I believe this issue may be more an Arnold than an Ornatrix issue . I have also declared this bug to Ornatrix developers.
Do Ornatrix+Arnold users experienced the same issue?

Here is a video showing the issue:
https://youtu.be/ySdXVUxCrhs

[madsd · Accepted solution]

You can attempt to force in full scene update like this, it is off pr default.
If this does not improve the situation, then it's a bug.

Ideally, it should be working right off the bat without this enabled.

[1k0]

Once again, thanks a lot Mads!
This solved the issue but I agree the plugin using Arnold to compute image sequences should work out of the box, I'm still waiting for developers answer.
Fortunately my scenes on the actual project aren't too huge translate so for now I'll go with this workflow.

Best regards