addExistingComponent weirdness

[innermatrix]

I have some code that should create three rectangular solids (A, B, and C) , at (0, 0), (2, 1), and (2, -1), respectively. That's not what happens. The problem appears to be caused by the fact that B and C are copies of A that aren't at the same level of component hierarchy as A; if I create them as siblings the problem goes away. 

Here's the code:

from traceback import format_exc
from adsk.core import Application, DialogResults, Matrix3D, Matrix2D, Vector3D, Point3D, Point2D, ValueInput, ObjectCollection
from adsk.fusion import Design, FeatureOperations

def run(context):
    ui = None
    try:
        app = Application.get()
        ui = app.userInterface
        design = Design.cast(app.activeProduct)

        if not design:
            ui.messageBox('No active Fusion design', 'No Design')
            return

        # Create component #1
        modelBoard = design.activeComponent.occurrences.addNewComponent(Matrix3D.create()).component
        modelBoard.name = "Board"

        # Create component #2
        packageComponent = design.activeComponent.occurrences.addNewComponent(Matrix3D.create()).component

        # Create a sketch in component #2
        outline = packageComponent.sketches.add(packageComponent.xYConstructionPlane)

        lines = outline.sketchCurves.sketchLines
        for line in [(-2, -1, 2, -1), (2, -1, 2, 1), (2, 1, -2, 1), (-2, 1, -2, -1)]:
            (x1, y1, x2, y2) = line
            start = Point3D.create(float(x1), float(y1), 0)
            end = Point3D.create(float(x2), float(y2), 0)

            lines.addByTwoPoints(start, end)

        # Extrude sketch in component #2
        extrudes = packageComponent.features.extrudeFeatures
        extrudeParams = extrudes.createInput(outline.profiles.item(0), FeatureOperations.NewBodyFeatureOperation)
        extrudeParams.setDistanceExtent(False, ValueInput.createByReal(.25))
        extrudeParams.isSolid = True
        extrudes.add(extrudeParams)

        # Copy component #2 into component #1 twice
        for x, y in [(2, 1), (-2, 1)]:
            transform = Matrix3D.create()
            transform.translation = Vector3D.create(x, y, 0)

            packageOccurrence = modelBoard.occurrences.addExistingComponent(packageComponent, transform)

    except:
        if ui:
            print(format_exc())
            ui.messageBox('Failed:\n{}'.format(format_exc(4)))

Here's what happens: 

Help / suggestions?

[ekinsb]

This appears to be a bug in the API.  I'm logging it so we can investigate some more and fix it.

[innermatrix]

Thanks!