Password set to a random value when passed through EJB 3 client in EAP 6

Issue

• In EAP 6, a custom login module is used which implements javax.security.auth.callback.NameCallback and javax.security.auth.callback.PasswordCallback is used with which the user is passed as expected to the NameCallback, however password that is passed to the PasswordCallback is always a "random value" like "0299df2c-620a-4ac6-83d3-50daaa65fb90". Is there a way to receive the Password on the server side in the plain text?