It appears deployers/ejb3.deployer/META-INF/persistence.properties is now completely ignored, and the default persistence properties are injected into the deployers/ejb3.deployer/META-INF/jpa-deployers-jboss-beans.xml "PersistenceUnitDeployer" bean via an embedded set of properties.

Most of the properties from the persistence.properties file are not being injected, so some defaults appear to have been dropped. I believe this is the cause of JBSEAM-3586.

Fix is to:

1) include the missing properties in the injected property set. Include commented out entries equivalent to the commented out ones in persistence.properties.
2) remove persistence.properties
3) test for regressions