Bug Light baking on scene change

I baked lighting into some of my objects and it looks fine in the scene and game view in Editor. But when I hit "Play", all the baked lighting is gone!

I debugged it and narrowed the problem down: When my scene "scene1" starts, I instantly call SceneManager.LoadScene() to load my "PersistentScene" which contains objects I need in every scene. Then in "PersistentScene" I load "scene1" additively: SceneManager.LoadSceneAsync(sceneName, LoadSceneMode.Additive)

And it seems like this removes all the baked lighting!

Anyone knows what I can do to keep my baked lighting even with this scene switching?
appvalley