Steps to reproduce:
- Create a new wiki (with Admin)
- After that wiki is created, go back to the Main Wiki
- Hover over home and click on Wiki Index
- Even you are the creator of a new wiki you are able to:
- Click on "Request join" option
- Become a member in your created wiki
In my option, this is an issue, because if you created that wiki, you are already a part of it, so you don't need to make a request to become a member.