How to reproduce:
1. Build the "tvOSExitBug.zip" project for tvOS
2. Connect gamepad controller to the Apple TV
3. Run the app on Apple TV
4. Click the touchpad button on remote to change allowExitToHome value to True
5. Click the touchpad button on remote to change allowExitToHome value back to False
6. Press the "B" button on the gamepad controller

Actual result: Unity exits the app.
Expected result: Unity doesn't exit the app.

Reproducible with: 2018.4.6f1, 2019.3.0a12, 2020.1.0a1.

Notes:
- Can't test other versions as exiting the app doesn't work at all (it was fixed by case 1134856)
- The B button on gamepad controller has the same behaviour as "Menu" button
- Most likely the issue will be reproducible on 2019.2 also after the first fix is back ported
- Not reproducible with PS4 controller.