So, very hard to explain without recording it, but basically while in gamemode 0, if you try and break a block and before it breaks stop. It returns to the unbroken state, you switch to gamemode 2, and with your too, press and hold the attack button while looking at the same block, it has the visual and audio representation of it breaking, but it never breaks and no item ever drops. I was using a special pickaxe that says can break iron ore, and can break coal ore, but I am unsure if that has anything to do with this glitch. Not really effective to gameplay, besides the fact it is a glitch nonetheless. Please email me at respawn_101@outlook.com for questions regarding this glitch...