Meta Avatar hand diverges from SyntheticHand only while grabbing (controller mode, OVR Plugin path)

Hi, thanks for your reply!

1. On the OpenXR plugin, Hand Poses are completely broken. The joint data between the traditional Oculus Hand Pose and OpenXR Hand is quite different, so Hand Poses can’t even be used properly with the OpenXR plugin. In my current project (using the OpenXR plugin), even when switching to the OculusXR plugin, only the Synthetic Hand shows the correct Hand Pose — the Meta Avatar Hand never aligns with it during any kind of interaction (Poke, Grab, etc.).

2. I didn’t switch plugins because of a specific bug; rather, I moved to the OpenXR plugin since Meta officially recommends it for ongoing projects. Therefore, I’d really like to have Meta Avatar Hand Poses working correctly under OpenXR.

3. You don’t really need my repo to reproduce the issue — it can be replicated simply by using OpenXR Plugin, Meta Avatar SDK v40.0.1, and Meta Interaction SDK v78 together.
For reference, in the OpenXR environment, the Sample Input Manager only works when combined with OVR Manager, which I wanted to avoid — so I implemented a custom Input Manager instead. (I noticed most Meta samples use OVR Manager together with XR Origin, so if that’s still the recommended approach, I’d appreciate clarification.)
Even when testing with the Sample Input Manager, the Hand Pose didn’t work properly — only the Hand position matched the Hand Grab Pose, but the finger pose did not.

Additionally, I’d appreciate your recommendation on which Meta Avatar Input Manager setup works best in OpenXR environments.

Thanks again for your time and support!