Description
Basically when you try to slime a bearing to blocks it is spinning it splits. Attempting to lock the bearing will place a new one, moving the old one that is still bugged. It will also not lock the bearing, since you technically clicked a different bearing (Or it thinks you did I think). This process moves the new one exponentially further away every time. The new one spawns where the old one was, moving the contraption. This not only creates a bug (likely due to hitboxes) that makes blocks unable to disconnect from the contraption via breaking all nearby blocks.

Image 1 showing the dupe after the locking the original, halved bearing.

Image 2 showing two wood blocks in the same contraption but not connected. You can see the bugged bearing on the left.

Image 3 showing the same two wood blocks, but attempting to slime them. It failed due to being the same contraption.

Image 4 showing the extra bearings after collecting them in survival (started with one bearing before collecting)
Game Log
https://mclo.gs/UnPy5e5
Description
Basically when you try to slime a bearing to blocks it is spinning it splits. Attempting to lock the bearing will place a new one, moving the old one that is still bugged. It will also not lock the bearing, since you technically clicked a different bearing (Or it thinks you did I think). This process moves the new one exponentially further away every time. The new one spawns where the old one was, moving the contraption. This not only creates a bug (likely due to hitboxes) that makes blocks unable to disconnect from the contraption via breaking all nearby blocks.
Game Log
https://mclo.gs/UnPy5e5