Using Unity 2019.4.9 LTS, I believe this happened after updating URP from 7.3.1 to 7.5.1. I have a script for disabling fog on selected cameras, pretty much identical to this one in the docs. It just doesn’t work anymore, I still see the fog in the Camera where I attach the script to.
EDIT: looks like this only happens in the editor because my Android/Quest build is fine. This is probably part of this same issue , where I can’t see URP MSAA anymore but only when playing in the editor. Something is happening to the editor URP camera I suppose.