GameObject with AsyncGPUReadback class in the script leaks memory when the Editor is running in the background

How to reproduce:
1. Open the “GPUReadbackLeak.zip” project from Google Drive
2. Turn on “Task Manager” on Windows
3. In the Hierarchy select the “Test” object
4. Enable “GPUReadbackLeakMVP” in the Inspector
5. Focus on another program window
6. Observe the “Editor” in “Task Manager”

Expected result: Memory usage should stay consistent.
Actual result: Memory usage increases by around 200mb/s.

Reproducible with: 2021.3.11f1, 2022.2.0b9

Reproducible on: Windows 10

Note: Could not reproduce the issue.