Looping CAPTCHA on public signup via customer portal

Issue Summary

Looping CAPTCHA on public signup via customer portal

Steps to Reproduce

1. Setup public signup for JSM following Enabling public signup and CAPTCHA to the letter.
   
   
2. Go to http://<jira_base_url>/servicedesk/customer/user/signup and signup
   

Expected Results

Customers should be able to sign up successfully with the correct CAPTCHA entered.

Actual Results

Customers receive repeated CAPTCHA loop prompts on sign up. No error was observed in the logs. HTTP status code 400 received in the HAR file.

{"errors":[],"reasonKey":"Signup is not currently available","reasonCode":"400"}

Workaround

1. Go to Administration (  ) > Applications
2. Go to Configuration under JIRA SERVICE MANAGEMENT section
3. Choose No, customers can just sign up under Public signup section