How to reproduce:
1. Open the “IN-91244-CinemachineCenterBug.zip“ project
2. Open the “SampleScene“
3. Select the “CinemachineCamera“ in Hierarchy
4. Make sure in both sections “Recentering“ is enabled in the Inspector
5. Enter Play Mode
6. Rotate the CinemachineCamera anywhere in the Game view
7. Wait until the Camera finishes recentering after ~3 seconds in the Game view
8. Observe the “Value“ properties in the “Pan Axis” and “Tilt Axis” sections in the Inspector

Expected result: The “Value“ value is the same as the “Center” value in the corresponding section
Actual result: The “Value“ value is “0” in both sections

Reproducible in: 3.1.1, 3.1.2 (2022.3.55f1, 6000.0.32f1, 6000.1.0a9)
Not reproducible in: 3.1.0 (2022.3.55f1, 6000.0.32f1, 6000.1.0a9)
Could not test in: 2.10.3 (2021.3.47f1) (different setup and no “Cinemachine Pan Tilt“ Component or similar “Center“ property)

Reproduced on: Windows 11 Pro (23H2)
Not reproduced on: No other environment tested