How to reproduce:

1. Open the attached project (BugRepro.zip)
2. Make sure the “SampleScene“ is open
3. Enter Play Mode
4. In the Hierarchy select the “VCam“ Game Object
5. In the Inspector expand the “CinemachineVirtualCamera“ Component’s “Body“ section
6. Observe how “Screen X” and “Screen Y“ values change while doing the proceeding step
7. In the Game view left click the mouse and move it in circles for 30 seconds

Expected result: The “Screen Y“ and “Screen X“ values are modified based on where the mouse moves in the Game view

Actual result: The “Screen Y“ and “Screen X“ values go up to 1.5 no matter where the mouse is moved

Reproducible on: Cinemahine 2.5.0, 2.6.17 (2022.3.38f1), 2.8.6 (2021.3.10f1), 2.8.9 (2022.1.16f1), 2.9.0-pre.6 (2022.2.0b8, 2023.1.0a10)

Reproducible with: Ubuntu 20.04

Not reproducible on: Windows 10

Notes:

1. “Screen X” reaches 1.5 slower when compared to “Screen Y“ and sometimes gets stuck at a lower value than 1.5
2. If the “Body“ section isn’t opened in the “CinemachineVirtualCamera“ Component the issue doesn’t reproduce
3. Changing “Screen X” and “Screen Y” values back to 0.5 allows the process to be repeated again