”-1” is returned when using “buildIndex” for not active scenes that are in the "Scenes In Build" list

Unity: Scene Management

2023.2.X

2023.1.X

2022.3.X

2021.3.X

2020.3.X

How to reproduce:
1. Open the user’s attached “sceneIndexBug.zip” project
2. Enter Play Mode and observe the text in the Game window

Expected result: Text is: “0 1 2”
Actual result: Text is: “0 -1 -1”

Reproducible with: 2020.3.48f1, 2021.3.26f1, 2022.3.0f1, 2023.1.0b18, 2023.2.0a16

Reproduced on: macOS 13.2.1 (Intel)

Note: reproducible in the Editor and in the Standalone Player (macOS)