[ROOT-10102] Incorrect behavior of one of the TGLLine3 constructors in Python - SFTJIRA

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This TGLLine3 constructor
https://root.cern.ch/doc/v614/classTGLLine3.html#ac51eb4c07e9e4faf0f205f06820b0ac7
behaves differently in C++ and Python. Consider this snippet:

C++:

trackAfterScattering = TGLLine3(TGLVertex3(2., 3., 0.2), TGLVector3(0., 0., -20.));

printf("Track vector: (%f, %f, %f)\n", trackAfterScattering.Vector().X(), trackAfterScattering.Vector().Y(), trackAfterScattering.Vector().Z());

Python:

import ROOT

from ROOT import TGLLine3, TGLVertex3, TGLVector3

trackAfterScattering = TGLLine3(TGLVertex3(2., 3., 0.2), TGLVector3(0., 0., -20.))

print("Track vector: (%f, %f, %f)" % (trackAfterScattering.Vector().X(), trackAfterScattering.Vector().Y(), trackAfterScattering.Vector().Z()))

The first one outputs the vector attributes as provided in the constructor (correct behavior):

Track vector: (0.000000, 0.000000, -20.000000)

, while the second one outputs something else (incorrect behavior):

Track vector: (-2.000000, -3.000000, -20.200000)