Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Enable the Cameras overlay in the Scene View
3. Make sure Scene View and Game View are docked in the same area
4. Click on the Game View to focus it (Scene View is not visible)
5. Restart the Editor
6. Click on the Scene View to make it come in the front
7. Observe the Cameras overlay in the Scene View

Actual results: The first person camera mode is greyed out and not clickable in the Cameras overlay

Expected results: The first person camera mode is not greyed out

Reproducible with versions: 6000.0.50f1, 6000.1.6f1, 6000.2.0b5

Tested on (OS): macOS Silicon Sequoia 15.3, Windows 11

Notes:

• Disabling and Enabling the Cameras overlay fixes the issue