This has happened to me twice after a few hours of using UEFN. All menus start to flicker then turn into black rectangles. Restarting UEFN fixes the bug.
THIS is an incredible common and at the same time annoying bug, I don’t think I’ve ever gone a session without seeing it. Sometimes it even expands to have the whole screen blacked out, horrible.
This is a known issue, even with UE. I was able to fix it by getting the latest drivers.
