this is probably because debug worlds are for making sure all blocks are working, not for playing on. It is essentially "view only"
it also causes this to happen for the same reason. MC-58897 https://bugs.mojang.com/browse/MC-58897
no like in /particle <name> <x> <y> <z> <xd> <yd> <zd> <speed> [count] [player:entity]
it cannot be selected as the [entity]ex:/particle lava ~ ~ ~ 1 1 1 1 100 @e[type=Arrow]
will output:[XX:XX:XX] That entity cannot be foundno matter what.
this is probably because debug worlds are for making sure all blocks are working, not for playing on. It is essentially "view only"
it also causes this to happen for the same reason. MC-58897 https://bugs.mojang.com/browse/MC-58897