I just discovered a major glitch with the stackable conveyor poles. Essentially, when building multiple of them, you can build more than one on the same location. This means when you are building a tower, the poles repeatedly snap to each other in the exact same position. I was able to make a 3 high tower, then keep placing the poles on the 3rd level, so I had about 20 in the same place. This is very easy to do, and can result in unintentional double placing, or in my case, rapidly clicking the button until you have to dismantle ~50 poles that are all in the same spot. This definitely needs fixing.