TransactionalObserverTest.testSucessfullTransaction() unstable

org.jboss.cdi.tck.tests.event.observer.transactional.TransactionalObserverTest.testSucessfullTransaction() seems to be failing randomly with

java.lang.AssertionError: expected:<true> but was:<false> on line 48

I guess the following assertion is not valid since both "checkpoints" may be set in the same millisecond

assertTrue(AccountTransactionObserver.beforeCompletionObservedTime > checkpoint);