When viewing world details for a world published by a player who's display name starts with non-ASCII characters, their name is empty from the titlebar at the top of the screen. The area after the word 'by' where the name should be can still be clicked on to view the user profile, but it displays as blank on this screen.

Example world shown is here: https://vrchat.com/home/world/wrld_6e6615e1-ccc3-4459-900b-1eeb944c459b/info