Skinned/deformed entities render incorrectly or become invisible when viewed in the Game and Scene views

How to reproduce:

1. Open the attached "IN-147312" Project
2. In the Project tab, go to Assets->SampleScenes->5. Deformation->SkinnedCharacter and then select the “SkinnedCharacter” Scene
3. Enter Play mode
4. Observe the Game View

Actual result: The models render incorrectly (distorted/glitched) or are invisible in the Game View
Expected result: Skinned/deformed entities should render properly and be visible in the Game View

Reproducible with: 6000.6.0b1, 6000.6.0b3, 6000.7.0a2
Not Reproducible with: 6000.0.79f1, 6000.3.19f1, 6000.5.3f1, 6000.6.0a7

Reproducible on: MacOS 26.5 (M1), Windows 11 (By reporter)
Not reproducible on: No other environments tested

Note: This can also be reproduced in the “MeshDeformations” scene