The bug here is, upon creating a clan, it must be 13 characters or shorter, if not, we'll be unable to create a clan...
Although, what's wrong is, when you create a clan with exactly 13 characters it won't let you join the Clan Chat.

As you can see on the image, I was able to create my clan with exactly 13 characters, yet when I tried to join it back (as seen in the same chat, just before the delete & remake), it was trying to join "Cult Of Zaro" instead of "Cult Of Zaros".