As-Built Joint (gear) does not work as intended in physics simulator

[apric0ts]

The rod in the gear appears to "fall over" as there is no gear generated in the simulator to support it.

This is what the model should look like (displayed in Fusion 360)

This is the model in the physics simulator (pybullet), appears to be a rod that starts standing up and then falls over. No gear shown and only one rod in the simulator, however there should be two gears and two rods as shown in the first image.

[cadop]

Please include image of example and error

[apric0ts]

Will do