Issue with parallel states and parent transitions

AccWhid

I have run into an issue with parallel states and parent transitions.

Take the state machine below. It is an extension of the basic string match example where a state will transition if an event with a matching string is posted to the state machine. In the below example, if I post a string of "testSuper" the state machine will transition to "Sub State 3". However, if I remove subState3 and change subStateTransition to not have a target state, then posting a message with string "testSuper" will result in the machine going into the "Fault State". Essentially, I am seeing behavior where both a sub state's transition and a super state's transition onTransition method is being called when a sub state's transition in a parallel state has no target state. However, if there is a target state then only the sub state's transition onTransition is called.

Is this expected behavior?

QNamedState* superState = new QNamedState("Super State", nullptr);
	QState* parallelState = new QState(QStateMachine::ParallelStates, superState);
	QState* parallel1 = new QState(parallelState);
	QState* parallel2 = new QState(parallelState);
	
	
	QNamedState* subState1 = new QNamedState("Sub State 1", parallel1);
	QNamedState* subState2 = new QNamedState("Sub State 2", parallel2);
	QNamedState* subState3 = new QNamedState("Sub State 3", parallel1);
	
	parallel1->setInitialState(subState1);
	parallel2->setInitialState(subState2);

	QNamedState* faultState = new QNamedState("Fault State", nullptr);

	QNamedStateTransition* faultStateTransition = new QNamedStateTransition("testSuper", "Super transition");
	faultStateTransition->setTargetState(faultState);
	superState->addTransition(faultStateTransition);

//Below will transition into "Sub State 3"

	QNamedStateTransition* subStateTransition = new QNamedStateTransition("testSuper", "Base transition");
	subStateTransition->setTargetState(subState3);
	subState1->addTransition(subStateTransition);

/*
This code will transition into "Fault State"

        QNamedStateTransition* subStateTransition = new QNamedStateTransition("testSuper", "Base transition");
	subState1->addTransition(subStateTransition);
*/

	QNamedStateTransition* bogusTransition = new QNamedStateTransition("bogusTest", "Bogus Transition");
	subState2->addTransition(bogusTransition);

	stateMachine.addState(superState);
	stateMachine.addState(faultState);
	stateMachine.setInitialState(superState);
	superState->setInitialState(parallelState);

	stateMachine.start();