Steps to reproduce:
1. Open the “N-108273” project
2. Open the “SampleScene” scene
3. Enter Play Mode
4. In the Hierarchy window, select “CinemachineCamera” GameObject
5. In the Inspector window, adjust the Focal Length of the “Cinemachine Volume Settings” component while observing the Game view

Expected Result: The Focal Length change is visible
Actual Result: The Focal Length change is not visible

Reproducible with: 2.6.0, 3.1.4 (6000.0.53f1, 6000.1.11f1, 6000.2.0b9, 6000.3.0a2)

Testing environment: macOS 15.5 (M4 Pro), Windows 10 (by user)
Not reproducible on: No other environment tested

Note:
- If disabling and enabling “Cinemachine Volume Settings” the Focal Length change is visible
- Also reproducible when not in Play Mode
- Does not reproduce when Focus Tracking is set to None