Ummmmm that is most likely a mod but there might be some command block glitch.
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97% of teenagers would cry if they saw Justin Bieber on top of a tower about to jump. If you're the 3% who is sitting there with popcorn screaming "DO A BACKFLIP", copy and paste this as your signature.
you can do a seley spawner and it will take fall damage and die. after it will drop itams into hoppers and take the bones out(this was a idea I made up)
97% of teenagers would cry if they saw Justin Bieber on top of a tower about to jump. If you're the 3% who is sitting there with popcorn screaming "DO A BACKFLIP", copy and paste this as your signature.
/summon Item ~ ~ ~ {Item:{id:1,Count:-1}}
You only need one.
/gamerule commandblockoutput false