It is disputable whether the law of the conservation of energy is held.
Please check the 23 line of these files. In Series.txt, position of box2 is X2 = 0.0, Y2 = 0.0, Z2 = 0.09. And position is changed X2 = 0.0, Y2 = 0.07, Z2 = 0.09 in Parallel.txt. As results, displacement in the z-direction in Parallel.txt is larger than Series.txt.
I expected that displacement in the z-direction in Series.txt is larger than Parallel.txt. Because displacement in the y-direction large in Parallel.txt. So rotational energy is applied. It doesn’t exist in Series.txt.
I can’t understand it. Please teach me how to correct.
It's not clear what bug this is reporting, looks like a friction pyramid approximation effect.