When I set up cluster with a number of caches and use JBossStandaloneJTAManagerLookup as transaction manager it seems that data is not replicated across the cluster. With DummyTransactionManagerLookup everything is ok. I attached example test which fails with JBossStandaloneJTAManagerLookup but finishes successfully with DummyTransactionManagerLookup. I don't know if it is intentional effect.