Area selection remains visible in Scene view when using non-standard pointers and moving the pointer outside the Scene view

Steps to reproduce:

1. Create a new project
2. In the Scene view, start an area selection using a non-standard pointer
3. Move the pointer outside the Scene view
4. Observe the result

Actual Result: The area selection remains visible in the Scene view
Expected Result: The area selection is cleared

Reproducible with: 2023.2.0a6, 6000.0.75f1, 6000.2.0a5
Not reproducible with: 2023.2.0a5, 6000.3.16f1, 6000.4.8f1, 6000.5.0b9, 6000.6.0a5
Fixed in: 6000.2.0a6

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:
-Reproduced with a Wacom tablet and pen; also reproduced locally on a touchscreen monitor
-The selected area disappears when clicking anywhere in the Scene view