After newest update I can not select 21:9 aspect ratio . I'm using 4k 55inch TV which is 16:9 and I've made 21:9 custom resolutions before and it was working without issues , now it is gone . If I select borderless mode all menus are to large and do not fit , I can not see top and bottom . Is it working for people with 21:9 monitors ?
I found the solution to my own problem. Custom resolutions were not seen because I made them in 30hz. It seems after update game doesn't recognize anything below 60hz. I was using 30hz for high resolutions to get smooth image instead of dipping from 60 to 50fps.