Linear Construction Infinite Block Duplication

[CaiB]

Using linear construction (which is so poorly documented the only way to figure it out is reading the code, thanks) itself is a trivial infinite block duplication exploit. Just use it, and when you run out of blocks the stack will simply go negative (at least that's how it behaves), allowing you to place an infinite amount more. Dropping this negative item or putting it in a bag will cause it to disappear, and then you can pick up all the blocks you placed.

How in the world does this make it past testing?!

Here's a video demonstrating it: https://www.youtube.com/watch?v=0Q5mhKJDDbw