In case when log debug level for class org.wildfly.security.auth.realm.ldap.LdapSecurityRealm.LdapSearch is enabled, then arguments and returning attributes are not able to be logged correctly because they are arrays.

See:

Executing search [(uid={0})] in context [ou=People,dc=jboss,dc=org] with arguments [[Ljava.lang.String;@45535736]. Returning attributes are [[Ljava.lang.String;@331d3f34]