Cinemachine camera with a confiner 2D does not confined to the specific region when activating the trigger for the first time

How to reproduce:
1. Open the “SampleProject” project
2. Open the “SampleScene”
3. Enter Play Mode
4. Observe the camera movement

Expected result: When the “Player” GameObject moves to the right for the first time, the camera focuses on the green platform
Actual result: When the “Player” GameObject moves to the right for the first time, the camera focuses between the white and green platforms

Reproducible in: 3.1.3 (6000.0.41f1, 6000.1.0b9, 6000.2.0a6)
Not reproducible in: 3.1.2 (6000.0.41f1, 6000.1.0b9, 6000.2.0a6)
Could not test with: 3.1.3 (2022.3.59f1) (compilation errors)

Reproducible on: Windows 10, macOS 15.3.1 (user’s)
Not reproducible on: No other environment tested