Preloading a scene in awake.

I stumbled onto something weird I think, when I run the loadsceneasync in awake but I halt the activation, the scene just loads.Is this intended or am I misusing the scenemanager?|

Code (CSharp):

1. private void Awake()
2.         {
3.              async_op = SceneManager.LoadSceneAsync(GameScene[nextState],LoadSceneMode.Single);
4.             async_op.allowSceneActivation = false;
5.             SceneManager.sceneLoaded += OnSceneLoaded;
6.         }

 

There is no async loading in the editor.