If cutscene have prefab and you do not press apply, no matter what you do editing,
the data always returns to prefab’s data when press Unity Play button to into Play Mode
I find “cutscene.GetComponentsInChildren(typeof(IDirectable))” always return null,
so EditorUtility.SetDirty(o) not working
change to “cutscene.GetComponentsInChildren(typeof(IDirectable), true)” it is working…