Raw Korean Writing

While trying to create an account on here, I encountered an issue with my username. Initially, I used my art username, "Woodzalty," because I was certain that no one else would have this username. However, the system prompted me to choose a different one, so I tried "Woodzalty1760723" and then "PumpkinSnailBrain1760723." Finally, I attempted to use [my real name]. I'm not sure if there are specific rules for allowed usernames, but if there are, the system doesn't provide any guidance. In conclusion, this leads me to believe that there might be a bug in the system, making it difficult for users to create accounts.