After my server updated into the new prerelease, the spawners from our mob grinders ceased to work. Its affecting not just one but every spawner online.
1 - Area is closed off and dark - still no spawning.
2 - Spawner is still active but not spawning.
Related issues
duplicates
Comments
migrated
migrated
Note: this is also in survival vanilla.
migrated
that is about survival gameplay,
Monsters
Monsters with no other NBT tags than id an no Pos tag are spawned at (0|y|z). This means only their y- and z-coordinate is used.
migrated
So if the spawner is at 927, 19, -46, it doesn't work unless the spawner is at z0?
migrated
no, it spawns fine, but the z coordinate of the entity will be 0, see MC-97491 for further detail
they spawn at 0/y/z, see MC-97491