After the update to 5.3.9 and Wildfly 16.0.0.Final we stopped seeing the Unable to release batch statement message but are still receiving.
2019-03-05 14:56:23,549 INFO [org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl] (default task-89) HHH000010: On release of batch it still contained JDBC statements
Since the other issue is closed it was suggested we open a new one.