Breeze issue with complexType change tracking - breeze

Question

I use Angular and Breeze in my app and I use "hasChangesChanged" event for handling a state of entities stored in EntityManager. I have a problem when I have entity with property that is complexType and isScalar=false.
The problem occurs when I make request twice (without changing any entity) and get the same entity. On second request "hasChangesChanged" event is fired with hasChanges=true.
In moment when this event is fired my entity has state "Modified", but after data are loaded that state is changed to "Unchanged".
I've wrote a (Jasmine) unit test. In comments are information which assertion throws error.
var entity,
hasChanges = false,
listeners = {
onChange: function (event) {
console.log('change', event.hasChanges);
}
};
spyOn(listeners, 'onChange');
$httpBackend.expectGET('json/SampleEntity?').respond(200, [
{
id: 1,
name: 'some name',
data: {},
$type: 'SampleEntity',
elements: [
{
etype: 'el1'
}
]
}
]);
manager.hasChangesChanged.subscribe(function (event) {
hasChanges = event.hasChanges;
});
var query = new breeze.EntityQuery('SampleEntity');
manager.executeQuery(query).then(function (data) {
entity = data.results[0];
});
$httpBackend.flush();
expect(hasChanges).toBe(false); // OK
expect(entity.entityAspect.entityState.isUnchanged()).toBe(true); // OK
$httpBackend.expectGET('json/SampleEntity?').respond(200, [
{
id: 1,
name: 'some name',
data: {},
$type: 'SampleEntity',
elements: [
{
etype: 'el1'
}
]
}
]);
manager.executeQuery(query).then(function (data) {
entity = data.results[0];
});
$httpBackend.flush();
expect(hasChanges).toBe(false); // ERROR
expect(entity.entityAspect.entityState.isUnchanged()).toBe(true); // OK
Is this expected behavior? And if not how I can fix it?