Running windowed Player when mouse cursor is over the window, main dispatch queue updates become intermittent

How to reproduce:
1. Open the user's attached project "TimerTest.zip"
2. In the Build Settings window press "Add Open Scenes"
3. Build and Run
4. Move the mouse cursor inside the Player window

Expected result: "Time" and "Timer fired" are counted continuously
Actual result: "Time" and "Timer fired" are paused and when the mouse cursor leaves the Player window the count is desynchronized

Reproducible with: 2019.4.39f1, 2020.3.34f1, 2021.3.2f1, 2022.1.1f1, 2022.2.0a13

Reproduced on: macOS (Intel) Monterey 12.3.1

Notes:

• Plugin used in project is "AVPro Video" which makes extensive use of the main dispatch queue to coordinate playback with Unity
• 2019.4.39f1, 2021.3.2f1, 2022.1.1f1, 2022.2.0a13 count is unsynced when the mouse is moving rapidly and paused when the mouse button is pressed down when inside Player window