Yep, noticed the same.
When I created !arpg@lemmy.ml I was under the impression that the full title would only show up on a community's page*, with "arpg" being the short handle used on feeds and listings. Instead....
That's on mobile. You should probably post this to github, I've tried searching for an open ticket about it but I'm too dumb to navigate that site lol.
*edit:
The ? tooltip while editing a community suggests that this is exactly how it should work.