Alright, I know the topic is a bit confusing, but I have made a machine to demonstrate the bug.
https://www.mediafire.com/?4dmhdtp4t1i9tm6
Also, here is a picutre:
As you can see, the circled wheel/gear thing is in a different position, this is because the wheel is stuck. It will not rotate at all.
However, when the simulation is restarted, this wheel will either work or not work, and this is the same for other wheels.
Attached Files
https://www.mediafire.com/?4dmhdtp4t1i9tm6
Also, here is a picutre:

As you can see, the circled wheel/gear thing is in a different position, this is because the wheel is stuck. It will not rotate at all.
However, when the simulation is restarted, this wheel will either work or not work, and this is the same for other wheels.
Attached Files