bug history state (again?)

[Bab64]

The state machine below does not work. We may however note that the bug is only present at the first time we re-enter A via a self-transition. The second time and next times, the state machine remembers well the prior active substate...

var sm = new scion.Statechart({
states: [
{
id: 'A',
transitions: [
{
event: 'x',
target: 'A'
}
],
states: [
{
id: 'H',
$type: 'history',
transitions: [
{
target: 'A1'
}
]
},
{
id: 'A1',
transitions: [
{
event: 'y',
target: 'A2'
}
]
},
{
id: 'A2'
}
]
}
]
});

sm.start();
//alert('Current: ' + sm.getConfiguration()[0]); // A1 -> OK
sm.gen('y');
//alert('Current: ' + sm.getConfiguration()[0]); // A2 -> OK
sm.gen('x'); // Self-transition
alert('Current (BUG): ' + sm.getConfiguration()[0]); // A2 expected but A1, why?
sm.gen('x'); // Self-transition
alert('Current: ' + sm.getConfiguration()[0]); // A2! This works the second time only?