Hi,
So far I’ve not been able to reproduce what you’re seeing specifically.
This is the result that I get; Left is TonemapperFilm 0 and Right is TonemapperFilm 1:
This is using your steps above. Can you try recreating in a vanilla project without the other assets in the view. Also, make sure that your Engine Scalability settings are set to EPIC. Can you also post your DxDiag here? Perhaps it could be something with the system your using vs what I am using that may be worth investigating.
Thank you!
Tim