JIRA SSO authenticator class does not copy users on login

Steps to Reproduce:

1. Install JIRA;
2. Install Crowd;
3. Configure Crowd to connect to a Delegated LDAP Directory;
4. Configure JIRA to use Crowd;
5. And enable SSO in JIRA;
6. Using an user that does not yet exist in JIRA or Crowd, but that exists in the LDAP Directory, try to log into JIRA.

Expected Behavior:

The user would be created in Crowd and in JIRA, and would've been logged into JIRA.

Actual Behavior:

The user is created in Crowd, but not in JIRA, which displays the following message:

NOTES:

This was reproduced using:

• JIRA 6.2.7;
• Crowd 2.7.2, and;
• Microsoft Active Directory.

JIRA will only allow the user to log in after the Crowd Directory synchronizes again.