Hibernate TransactionSynch should rollback transaction on session.flush exception

org.jboss.hibernate.session.TransactionSynch only logs a error on session flush in beforeCompletion:
try

{ log.trace("Flushing Session"); session.flush(); }

catch(Throwable t)

{ log.warn("Error flushing session"); }

This leads to inconsistent transactions. A transaction is commited, but should be rollbacked on a session.flush problem. In my opinion it should throw a RuntimeException to rollback the transaction.