How to reproduce
Create a customized world with the seed
3097946827751441825and default settings except dungeon count which should be 100
Use the following teleport command
/tp @s -2611.29 32.13 3316.08 296.21 20.59
Code analysis
Based on 1.11 decompiled using MCP 9.35 rc1
The method net.minecraft.world.gen.feature.WorldGenDungeons.generate(World, Random, BlockPos) only makes sure that it does not replace chests, but does not test for mob spawners.
Linked issues
relates to
Attachments
Comments
[Mod] Neko
Yes, the same bug occurs also with the same seed with a freshly generated world in Minecraft 1.9.4, without world download, using Dungeon Count 100.
Like I said, the world download includes non-default world generation options. With default world generation settings, there is no double dungeon at this location.
I managed to reproduce this on 1.13.2.
Seed: 3097946827751441825
Double dungeon XYZ: -2607 31 3319
Observe that the second spawner has been replaced with cobblestone.
Important note: this dungeon does not generate as a double dungeon if you directly /tp to the coordinates. I can verify the double dungeon spawns on a fresh world when teleporting to -2572 31 3275 and then moving to the dungeon coordinates specified above. There seems to be a quirk where teleporting directly into the ungenerated chunk can influence the dungeon generation.
Found one broken spawner in 20w22a from a stronghold. It looks like this should be reopened.
marcono1234
@@unknown, since this involves a stronghold it might be a separate (but related) issue. Could you please create a separate report and provide seed, coordinates and (if necessary) world generation options in text form there?
Yeah I’ll create a separate ticket for a different dungeon bug.
I made a ticket MC-190568 for the stronghold destroying the spawner.
pine1needle
This bug was either not actually fixed in 20w22a, or else it was reintroduced in a later version. Please see MC-199953 for a seed and coordinates that reproduce this bug in 1.16.3.
coschevi
Does this occur without the world download but with the same seed?