Reproduction steps:
1. Create a new 3D project
2. Open any context menu
3. Press Alt + Tab key combination

Expected result: The Editor window is tabbed out of
Actual result: The Editor window stays in focus

Reproducible with: 2021.3.37f1, 2022.3.26f1, 6000.0.0b16
Not reproducible with: 2023.2.20f1 (Introduced new Context Menus)

Reproducible on: Ubuntu 22.04
Not reproducible on: Windows 10

Note:
- This reproduces with most system shortcuts. For example: Alt + Tab, Print Screen