I can’t get any DOF in 4.23. I don’t consider myself a noob and I have tried everything I can think of and find when I search. I have no issues setting up DOF in 4.22.
No I am also missing this feature. All I´ve found is this. We used gausian DOF with distance and a sky mask for a very important effect in our game. it’s not ok to just remove a feature like that. it kind of violates a unspoken agreement between the developers and epic. https://docs.unrealengine.com/en-US/Engine/Rendering/PostProcessEffects/DepthOfField/MobileDOFMethods/index.html
This is what you are looking for: