Reproduction steps:
1. Open the user's attached project
2. Build the SampleScene scene
3. Launch the build
4. Close the build and check the Player.log

Expected result: "Quitting the Player" is logged in the Player.log
Actual result: "Quitting the Player" is not logged in the Player.log

Reproducible with: 2020.1.0a24, 2020.1.17f1, 2020.2.3f1, 2021.1.0b5, 2021.2.0a3
Not reproducible with: 2019.4.19f1, 2020.1.0a23

Notes:
1. With 2020.1.11f1 - 2020.2.3f1 event is not raised and there is a delay when closing the build (Mono Scripting backend)
2. With 2021.1.0a1 - 2021.2.0a3 event is not raised but there is no delay when closing the build (Mono Scripting backend)
3. With 2020.1.0a24 - 2021.2.0a3 event is not raised but there is no delay when closing the build (IL2CPP Scripting backend)
4. Reproducible with Windows and Mac builds