If activemq 5.9.1.Final resource adapter is deployed to WF10/EAP7 then MDB with no public constructor is deployed without logging any error/warning that such deployment failed. Note that EJB 3.2 spec defines that MDB must have public constructor to be deployed:
The class must have a public constructor that takes no arguments. The container uses this constructor to create instances of the message-driven bean class.

See forum reference for more information - https://developer.jboss.org/thread/272575