Reproduction steps:
1. Open the user’s attached project
2. Open the TestScene.unity located in \\Assets
Scenes folder in the Project window
3. Comment out lines 64-69 in TestScript.cs Script located in \\Assets
Scripts folder in the Project window
4. Enter Play Mode
5. Observe the text after clicking the “Test” button in the Game View
6. Exit Play Mode
7. Switch Platform to WebGL and then Build And Run the project (File > Build Settings > WebGL)
8. Observe the text after clicking the “Test” button in the WebGL Player
Expected result: “result Transform TestContainer (UnityEngine.Transform)” should be outputted
Actual result: “result Boolean False” gets outputted
Reproducible with: 2019.4.39f1, 2020.3.35f1, 2021.3.4f1, 2022.1.4f1, 2022.2.0a16
Reproducible on: Windows 10 (21H2)
Note: if the lines 64-69 in TestScript.cs Script located in \\Assets
Scripts folder in the Project window are not commented, the issue is not present