How to reproduce:
1. Open the “Test Highlights.zip“ project
2. Attach any animation clip to any GameObject in the Hierarchy
3. Select that GameObject
4. Open the Animation window
5. Enable the “Preview” in the Animation window
6. Reimport any script in the Project tab
7. Select the same GameObject again
8. Observe the Animation window
Expected result: The “Preview” button can be toggled
Actual result: The “Preview” button is disabled
Reproducible in: 6000.3.0a1, 6000.3.0a4
Not reproducible in: 2023.1.0a1, 6000.0.55f1, 6000.2.0b2(2bdac9ac0d74), 6000.2.0f1
Reproduced on: Windows 11 Pro (24H2)
Not reproduced on: No other environment tested