After upgrading from MRUK 83.0.4 to 85.0.0, the `_cameraAccess.GetCameraPose()` method returns an incorrect camera pose with a Y position offset of approximately 34cm, causing the green quad overlay to no longer align with detected QR codes in unmapped spaces in the CameraKit QR code demonstration. This issue arises from a mismatch in the reference frame used by `GetCameraPose()`, which still uses HeadPos internally, whereas most other components have shifted to using Camera.main. The incorrect pose can be manually corrected by using Camera.main.transform position and rotation with the lens offset from Intrinsics.LensOffset applied.