Signing up for a Trello account with a Google login gives an error "Email is restricted to Atlassian account signup"

Issue Summary

Signing up to a managed domain using the "Login with Google" button results in an error: "Email is restricted to Atlassian account signup"

the account creation page, enter your email address in the email field first, and then proceed onto the next account creation screen where you may then use the Google button to complete the account registration.

Steps to Reproduce

1. On the account creation page, without entering an email, click "Continue with Google"
2. Error will show: "Email is restricted to Atlassian account signup"

Expected Results

The user should be able to use their existing Google login to signup for an Atlassian account

Actual Results

The user receives an error. 

{"error":"SIGNUP_MANAGED_ATLASSIAN_ACCOUNT_RESTRICTION","message":"Email is restricted to Atlassian account signup"}"

Workaround

Do not use the Google option from the Trello sign up page.

• Go to https://trello.com/signup
• Enter the email address and click on Continue
• On the next page (id.atlassian.com), use the Continue with Google