I’m seeing the exact same issue. All open Unreal windows have the same image of my world, until a mouse action triggers a menu popup, and the window goes black and the menu is drawn.
I’m a Windows programmer and I’ve seen similar issues when there are problems creating HDCs, memory can’t be allocated, no more handles are available, etc.
I am on Windows 11 Home, with a i9 12900K, 32 GB, and an RTX 2080 (8 GB).