Block dupe/ Block deletion,
It seams that when placing or removing blocks at high rates it can create or delete \"extra blocks\"
allowing the creation of block from nothing(This is in ship build mode) or the removeal of blocks,it seams that very rapid(VERY) very rapid clicking is needed to obtain the effect, but it works repeatedly, and while symetry mode is active, which can give it a scary effectiveness.
to quote a respnse i got in public chat
03:52HadrasVorshoth
\"I guess that works via the game placing more blocks than you put down since you click to place a block faster than it can calculate whether it\'s already dropped the number you have, so it doubly places a block. Interesting.\"