Vray GPU shape particles are always spheres

[tyFlow]

That's so strange....and it's not something that was fixed, because it's not something that was ever an issue. There's gotta be something else going on.

The VRay GPU implementation was done by Chaos Group directly, you could try reaching out to them to see if they can make sense of your scene and the issue. I still can't reproduce it here so I'm not sure what else to try myself...