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  1. Minecraft: Java Edition
  2. MC-87184

Changing spawner with spawn egg only overrides id

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    • Confirmed

      Important!

      When fixing this, please consider also disabling non-op player from using spawn_eggs or use another way to prevent MC-75630 from happening.

      General overriding problem

      When you use a spawn egg to override the Entity of a spawner, it will only replace the id tag in the id tag in the EntityTag of the spawn egg.
      This means other tags are still contained.

      Example command
      /setblock ~ ~1 ~ mob_spawner 0 replace {SpawnData:{id:Sheep,Color:1},Delay:32767,MinSpawnDelay:32767,MaxSpawnDelay:32767,SpawnCount:1,SpawnRange:1}

      – Changing to Guardian spawner –

      /blockdata
      {
	MaxNearbyEntities:6s,
	RequiredPlayerRange:16s,
	SpawnCount:1s,
	SpawnData:{
		Color:1,
		id:"Guardian"
	},
	MaxSpawnDelay:32767s,
	Delay:19754s,
	x:-481,
	y:57,
	z:-496,
	id:"MobSpawner",
	SpawnRange:1s,
	MinSpawnDelay:32767s,
	SpawnPotentials:[
		0:{
			Entity:{
				Color:1,
				id:"Guardian"
			},
			Weight:1
		}
	]
}

      Overriding with spawn_egg containing EntityTag

      If the spawn egg contains other NBT data, it will ignore it and only change the id.

      Example command
      /give @p spawn_egg 1 0 {EntityTag:{id:FallingSand,Block:stone}}

            searge [Mojang] Searge (Michael Stoyke)
            marcono1234 Marcono1234
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              Created:
              Updated:
              Resolved:
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