Minecraft wiki entry for Zero-ticking, associated text: When a piston receives a pulse that turns on, and then off in the same tick, this is known as a 0-tick pulse. This will cause sticky pistons to instantly drop their block and start retracting.‌[Java Edition only]. Regular pistons will start retracting instantly when powered by a 0-tick pulse, but the block will not instantly teleport unlike sticky pistons. Because a 0-tick pulse turns on and off in the same tick, many 0-tick pulses will not render, but the pulse still exists. Due to how 0-tick pulses work, some 0-tick pulses are unable to bud-power pistons in some circumstances.