If LDAP entry only has "sn" attribute, the first word gets cut when updating user from Jira (loss of information)

• Add a Read-Write LDAP directory to Jira with one user that has sn="User from LDAP"
• Synchronize, you will see the user appear
• Go to "User Browser" select the user from LDAP, notice that full name = "User from LDAP"
• Click on Edit Details, don't change anything and click save.

Expected: User to maintain its full name = "User from LDAP"

Actual: Full name was changed to = "from LDAP"

Notes:

• if I perform the operation again, the full name will keep loosing its first word until it keeps only the last word.
• From http://docs.atlassian.com/crowd/latest/com/atlassian/crowd/util/UserUtils.html#populateNames%28com.atlassian.crowd.model.user.User%29 , the expectation is for Crowd to create the "displayName" and "givenName" based on the information provided. In this case, the expected values are givenName="User", sn="from LDAP", displayName="User from LDAP".