The engine is radically different so the chances of this being the same issue are remote at best, if not just completely unexistent.
I’d suggest simply not allowing the windowed fullscreen option.
Or, to pull the engine source and to heavily modify it so that the window creation is done with parameters you want only (such as hiding the frame).
Otherwise, I would just build a launcher app that lets the user control settings via a custom .ini file.
Launcer > mess with settings > launch EXE that reads/uses settings.
Instead of “launch into full screen, get lost, figure out where settings are, possibly get locked out and have to manually figure out how to unscrew epic’s settings, etc”.
I’d go as far as saying this is “best practice” for anything sold at retail in 2025…