New transaction manager does not implement TransactionTimeoutConfiguration properly

The new transaction manager in 4.2.x does not implement the TransactionTimeoutConfiguration properly

http://viewvc.jboss.org/cgi-bin/viewvc.cgi/labs/labs/jbosstm/trunk/atsintegration/classes/com/arjuna/ats/jbossatx/jta/TransactionManagerDelegate.java?revision=15380&view=markup

getTimeLeftBeforeTransactionTimeout(true)
should throw an error if there is a transaction associated with the thread and it is not active, preparing, etc.
Instead it only throws an error if the transaction is marked rollback only.

In particular, a transaction at status ROLLED BACK (because of transaction timeout) should throw an error.