Any time I log with my Microsoft account on a Windows computer it also butchers my name and uses just some letters from it when creating folders and stuff like that. It’s something that is stored somewhere only this specific action reads from, but it’s happening for over a decade already with no idea how to fix.
Between that and the fact that windows now creates the Documents folder inside of OneDrive directly and gets all messed up if you move it out, I ended up buying windows Pro just to get back to an offline account.