Bug LoadSceneAsync doesn't set newly loaded scene active

So I have this code that loads requested scene using `LoadSceneAsync` where `activateOnLoad` is defaulted to `true`, but loaded scene is not set as active. Why?

Code (CSharp):

1. protected async UniTask LoadSceneAsync(
2.     AssetReference scene)
3. {
4.     if (_isLoading)
5.     {
6.         _logger.LogWarning(LogTag, "Scene load was requested, but scene load is in progress.");
7.         return;
8.     }
9.  
10.     _isLoading = true;
11.     await _settings.LoadingScreenScene.LoadSceneAsync(LoadSceneMode.Additive);
12.  
13.     if (_currentScene.Scene.isLoaded)
14.     {
15.         _logger.Log(LogTag, $"Unloading '{_currentScene.Scene.name}' scene.");
16.         await Addressables.UnloadSceneAsync(_currentScene);
17.         _logger.Log(LogTag, "Scene was unloaded successfully.");
18.     }
19.  
20.     // TODO: Remove
21.     await UniTask.Delay(2000);
22.  
23.     _logger.Log(LogTag, "Starting scene loading.");
24.     _currentScene = await scene.LoadSceneAsync(LoadSceneMode.Additive);
25.     _logger.Log(LogTag, $"Scene '{_currentScene.Scene.name}' was loaded successfully.");
26.     _isLoading = false;
27.     await _settings.LoadingScreenScene.UnLoadScene();
28. }

Bing AI suggests using this:

Code (CSharp):

1. await UniTask.NextFrame();
2. SceneManager.SetActiveScene(_currentScene.Scene);

Yeah, it works, but this is an ugly hack, damn....

 

Well, the naming is a bit unfortunate. The

activateOnLoad

refers the step after scene loading, where all the scripts in the scene are executed and their Awake/OnEnable called. It does not refer to the "active scene", those are separate concepts. You use

activateOnLoad

(called allowSceneActivation outside of Addressables) to pre-load a scene without immediately executing all the scripts it contains.

Calling

SetActiveScene

is the only way to make an asynchronously loaded scene the active scene after loading it. Unity's documentation on SetActiveScene says this:

 

Thanks!