MC-167873

Mobs sometimes spawn in biomes where they shouldn't spawn

The Bug
Biome specific mobs, such as Wolves & Llamas, can spawn in incorrect biomes such as Plains and Swamps

Reprodution for 1.15 to 21w05b & 1.17 (Here you will see Wolves spawning in a Plains biome)

Seed: -8825165825524102318
Coordinates: /tp @s -252 75 -173

Reproduction for 21w06a (Here you will see Llamas spawning in a Swamp Biome)

Seed: -5094942567907122041
Coordinates: /tp @s 557 76 1468

Status:Unresolved

Reporter:[Mod] Anthony Cicinelli

Created:2019-12-13, 11:57 PM

Updated:2023-08-22, 06:14 PM

Votes:13

Watchers:5

Confirmation Status:Confirmed

Mojang Priority:Normal

Category:Mob spawning

Labels:spawn, wolves

Affects Versions:

1.15, 1.15.1, 1.15.1 Pre-release 1, 1.15.2 Pre-release 2, 1.15.2, 20w06a, 20w07a, 20w08a, 20w09a, 20w10a, 20w11a, 20w12a, 20w13a, 20w13b, 20w14a, 20w15a, 20w16a, 20w17a, 20w18a, 20w19a, 20w20a, 20w20b, 20w21a, 20w22a, 1.16 Pre-release 1, 1.16 Pre-release 2, 1.16 Pre-release 3, 1.16 Pre-release 4, 1.16 Pre-release 5, 1.16 Pre-release 6, 1.16 Pre-release 7, 1.16 Pre-release 8, 1.16 Release Candidate 1, 1.16, 1.16.1, 20w27a, 20w28a, 20w29a, 20w30a, 1.16.2 Pre-release 1, 1.16.2 Pre-release 2, 1.16.2 Pre-release 3, 1.16.2 Release Candidate 1, 1.16.2 Release Candidate 2, 1.16.2, 1.16.3 Release Candidate 1, 1.16.3, 1.16.4 Pre-release 1, 1.16.4 Pre-release 2, 1.16.4 Release Candidate 1, 1.16.4, 20w45a, 20w46a, 20w48a, 20w49a, 20w51a, 21w05b, 21w06a, 1.17, 1.18, 1.18.1

Fix Versions:-