Reproduction steps:
1. Open the attached “Bugrepro” project
2. Click File > Build and Run
3. Observe the “root” GameObject rigging animation

Expected result: The “root” GameObject moves with proper rig animation
Actual result: The “root” GameObjet moves like a straight stick, without its rig animation

Reproducible with: 2022.2.0a3, 2022.2.20f1, 2023.1.0b16, 2023.2.0a15
Not reproducible with: 2020.3.48f1, 2021.3.25f1, 2022.2.0a2

Reproducible on: Windows 10, Ubuntu 22.10

Notes:

• In the console, you can see these errors:

{noformat}The referenced script on this Behaviour (Game Object 'damp7') is missing!
A scripted object (probably UnityEngine.Animations.Rigging.DampedTransform?) has a different serialization layout when loading. (Read 32 bytes but expected 72 bytes)
Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts?
The referenced script on this Behaviour (Game Object 'damp4') is missing!
A scripted object (probably UnityEngine.Animations.Rigging.DampedTransform?) has a different serialization layout when loading. (Read 32 bytes but expected 72 bytes)
Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts?
...more like these{noformat}

• Does not reproduce in Editor PlayMode, or other platforms apart from WebGL