Open
Description
- Go to Challenge details page
- Register to the challenge (example: https://www.topcoder.com/challenges/08b74bb4-67df-49a4-bd8e-672ac5e257d2)
- Unregister to the challenge
- After a couple of minutes, user is registered back to the challenge, and even receives Registration successful email again.
Expected: user should not be registered to the challenge again and should stay unregistered.