Using DzBox3::getIntersection

Not sure if it is the method or my understanding that is incorrect here...

The result appears to always be [0, 0, 0] for the first intersection point with both DS4 and DS6, and the DS4 SDK.

In the following example, I expect [[0, 0, -50], [0, 0, 50]]. Am I wrong in expecting this?

var oSettings = DzSettings();
Geometry.getDefaultPrimitiveOptions(Geometry.Cube, oSettings);
var oNode = Geometry.createPrimitive(oSettings);

var oLine = DzLine3([[0, 0, -4000], [0, 0, 4000]]);

var oIntersection = oNode.getWSBoundingBox().getIntersection(oLine);
print (oIntersection.intersects);
print (oIntersection.firstIntersection);
print (oIntersection.lastIntersection);

Executing Script...
true
[0,0,0]
[0,0,50]
Result: 
Script executed in 0 secs 7 msecs.