After update Seafile 12, LDAP a bit mess

Hello there, i already update version 12 (Docker) and now the LDAP is a bit strange … here my LDAP conf:

ENABLE_LDAP = True
LDAP_SERVER_URL = 'ldaps://servername:636'
LDAP_BASE_DN = 'OU=...'
LDAP_ADMIN_PASSWORD = '******'
LDAP_PROVIDER = 'ldap'
LDAP_LOGIN_ATTR = 'userPrincipalName'
LDAP_CONTACT_EMAIL_ATTR = 'userPrincipalName'
LDAP_USER_ROLE_ATTR = ''
LDAP_USER_FIRST_NAME_ATTR = 'givenName'
LDAP_USER_LAST_NAME_ATTR = 'sn'
LDAP_USER_NAME_REVERSE = False
LDAP_FILTER = 'memberOf=CN=SW_Seafile_HU,....'

I add users to "SW_Seafile_HU’ AD group and i see it correctly, he’s userPrincipalName in LDAP page. But after first login, these “email” are change to ********@auth.local

It only affect user that login first AFTER Seafile 12 update. The old users mail address not change it.