websphere server stop causes inflight ejb transactions to rollback

Question

I observe errors as below when Websphere server instance is stopped from admin console

Caused by: javax.ejb.TransactionRolledbackLocalException: ; nested exception is: javax.transaction.TransactionRolledbackException: Transaction is ended due to timeout at com.ibm.ws.Transaction.JTA.TranManagerImpl.completeTxTimeout(TranManagerImpl.java:576) at com.ibm.ws.Transaction.JTA.TranManagerSet.completeTxTimeout(TranManagerSet.java:625)

These are inflight txns during server stop. Increasing the timeouts from "Application servers->server->Transaction Service" does not seem to help.

Is this to do with the server quiesce timeouts? if yes is there a way to configure those.

Also the rollbacks are not observed when I "terminate" the server from the Admin Console, only observed when I "stop" the server.

Any ideas to debug this issue would be great.