I don’t remember exactly what it disables, but a lot of the effects are done during the same pass as the tonemapper so color grading and exposure are for sure disabled when you replace it through the Post-Process Volume. Exposure and Scene Color Tint is a simple multiplication so you could add them back in the material if need be. This wouldn’t require any code changes, although you could update the TonemappingCommon shader to make it a native feature if the editor doesn’t support it already. You might want to search in the console variables if you haven’t yet and make sure there isn’t any other options for tonemapping