TubeSpatialObject bounding box includes rounded ends even after they are turned off

[auneri]

Description

The bounding box for TubeSpatialObject always includes rounded ends.

Steps to Reproduce

tso = itk.TubeSpatialObject.x3.New()
tso.SetEndRounded(False)
for z in (-1, 1):
    tsop = itk.TubeSpatialObjectPoint.x3()
    tsop.SetPositionInObjectSpace((0, 0, z))
    tsop.SetRadiusInObjectSpace(1)
    tso.AddPoint(tsop)
tso.Update()
bbox = tso.GetMyBoundingBoxInWorldSpace()
print(bbox.GetMinimum(), bbox.GetMaximum())

Expected behavior

itkPointD3 ([-1, -1, -1]) itkPointD3 ([1, 1, 1])

Actual behavior

itkPointD3 ([-1, -1, -2]) itkPointD3 ([1, 1, 2])

The results do not change when EndRounded is toggled, though they should. Moreover, the bounding box extent in z increases when RadiusInObjectSpace is increased, which should only be expected when EndRounded is True.

Reproducibility

Happens every time.

Versions

Tested on v5.3 and v5.4rc4.

Environment

Additional Information