Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Ragdoll Bug Repro” Scene
3. Select the “FannequinV2RootDismemberable-Ragdoll” GO in the Hierarchy window
4. Enter the Play Mode
5. Observe the Scene View
Expected result: The joints do not jitter
Actual result: The joints get jittery upon initialization
Reproducible with: 2023.3.0b1, 6000.0.4f1
Not reproducible with: 2021.3.39f1, 2022.3.31f1, 2023.3.0a19
Reproducible on: Windows 10
Not reproducible on: No other environment tested