Customers receives repeated CAPTCHA loop prompts on sign up page for a Jira Service Desk Portal account

Issue Summary

Customers receives repeated CAPTCHA loop prompts on sign up page for a Jira Service Desk Portal account

Steps to Reproduce

1. Click on 'Sign up for an account' in customer portal login page
   
2. Should result in http://localhost:port/jxxx/servicedesk/customer/user/signup
3. Entering a valid email address and the correct CAPTCHA will repeat indefinitely in a loop without allowing the Sign up
   

 Issue is not replicable at every attempt, could replicate locally once after multiple attempts

Expected Results

Customers should be able to Sign up on the first attempt

Actual Results

Customers receives repeated CAPTCHA loop prompts on Sign up

Workaround