Solved
Solving Unity 6000 - Meta XR SDK Tracking Issues
Bug Directly upgrading from Unity 2023.2 to Unity 6000 made both headset and hand tracking not working. Reason It seems that Oculus Plug-in is not compatible. Versions Quest Pro Windows 11 23...
This issue was fixed in Unity 6000.0.25f1. Here is a workaround if you cannot upgrade your project.
https://discussions.unity.com/t/unity-6-meta-core-sdk-workaround/1538217/11
