I thought maybe they reprogrammed the site so that the original username, not nickname, shows up. I tried it, though, and that’s not the case.
What I did notice, though, is that when switching back and forth between the news and the Coffee Room (why do you call news the main site? ;), I had to keep on logging in again. Is that normal?
The CoffeeRoom has a different system, it seems. Your actual user name is mbachur. They changed the setting of what it should show here. Not necessarily would that affect the news section.