Strange packaging result: Four items in four containers

[shuairan]

Hey, for the following example the packager packs every box in a single container:

@Test
public void testFourForTwo() throws Exception {
	List<Container> containers = new ArrayList<>();
	containers.add(Container.newBuilder().withDescription("1").withEmptyWeight(0).withSize(60, 40, 25).withMaxLoadWeight(100).build());

	LargestAreaFitFirstPackager packager = LargestAreaFitFirstPackager.newBuilder().withContainers(containers).build();

	StackableItem b1 = new StackableItem(Box.newBuilder().withId("b1").withDescription("b1").withSize(35, 25, 14).withWeight(0).withRotate3D().build(), 1);
	StackableItem b2 = new StackableItem(Box.newBuilder().withId("b2").withDescription("b2").withSize(35, 25, 14).withWeight(0).withRotate3D().build(), 1);
	StackableItem b3 = new StackableItem(Box.newBuilder().withId("b3").withDescription("b3").withSize(35, 23, 13).withWeight(0).withRotate3D().build(), 1);
	StackableItem b4 = new StackableItem(Box.newBuilder().withId("b4").withDescription("b4").withSize(35, 25, 14).withWeight(0).withRotate3D().build(), 1);

	List<Container> packaging = packager.packList(Arrays.asList(b1, b2, b3, b4), 100);
	write(packaging);
}

When Box b3 has withSize(35, 23, 14) (dz +1) it packs the four boxes into two containers. That seems to be kind of strange. Is that a bug or misbehaviour in LAFF?

[shuairan]

Visualisation

[skjolber]

Fixed in 2.1.4