https://youtu.be/bv3hO8p2kFw You can tell it is a 0-Tick Pulse, because it activates pistons, but not 1-Tick Repeaters.
There are 0-tick pulses, and they are possible in Java and Bedrock.
I have also used 0-tick pulses and it still doesn’t spit out the block.
I can’t copy a world that is only 50 MB, but smaller worlds work just fine. (1.13.0)