Scene view Flythrough mode icon is stuck when maximising the Scene view with a shortcut during the Flythrough mode

How to reproduce:
1. Create a new Unity project
2. In the Scene view, switch to the Flythrough mode (Middle mouse button)
3. While in the Flythrough mode, press "Shift+Space" to maximise the Scene view
4. Release the Middle mouse button and observe the results

Expected results: The icon switches to the default cursor
Actual results: The icon doesn't switch to the default cursor and remains stuck as a Flythrough mode icon

Reproducible with: 6000.0.68f1, 6000.3.9f1, 6000.4.0b9, 6000.5.0a7

Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested