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MC-93271

Mushroom island ocean overlapping other biomes causing mobs to spawn on mushroom islands

The bug

Since the "Update that changed the world", mushroom island shore biome have not been generating properly around the edge of a mushroom biome.

How to reproduce

Seed: -640796280
Coordinates: /tp @s 29898.93 78.00 -8592.22 493.80 67.95

Linked issues

Attachments

Comments

Kris Green

i am also having this problem. there are supposed to be 3 mushroom islands on my map on X box One. but all i can find are oceans there no mycelium

seed: -1120300048038858764

user-f2760

The enviroment is supposed to contain pc details

monkeybee

oh sry my bad 😞 dont think it will matter to this bug but ill go find them now (any chance of a template so me know what it is accertly u want )

user-f2760

just put down anything that relates to your pc enviroment
OS type/version
java version
drivers
etc

monkeybee

ok apart form the OS me copyed what it says in the f3 screen on minecraft me think thats every thing u asked for sry if its not

user-f2760

it's good now

user-2a4c8

Seed: 16
World creation version: 18w11a
Area: West

wobst.michael

@unknown, please provide coordinates...

violine1101

Another example:

Seed: 108301
Location: 1758 / 1029
Version: 18w11a

Kraif

Confirmed for 1.13.1.

Conem

Confirmed in 1.16-pre5. 

Butrint

confirmed in 1.16-pre5 added a mp4 files showing mobs spawning in those grass_blocks
and a screenshot showing the grass_blocks within Minecraft:ocean biome instead of mushroom_field_shore.
seed : 1869945237501097058
coordinates : -2717 81 -3462

dagreenkat

Confirmed in 1.16.1 on seed -350501890505856 near -323 85 -1315 in biome "mushroom_field_shore"

monkeybee

comfirmed for 1.16.3 (cant give seed dont know it on smp) 

Avoma

Can confirm in 20w49a using the provided seed and coordinates.

Avoma

Can confirm in 21w03a.

Avoma

Can confirm in 21w05b.

Avoma

Can confirm in 21w07a.

Marty McFly

Affects 1.17

user-aa418

Can confirm in 1.17.1.

monkeybee

its still a thing in 1.18 pre1
seed -5730231953357368694
cords 7269 68 -25

Avoma

Can confirm in 1.19.

[media]

Version: 1.19

Seed: -953538683905638291
Coordinates: /execute in minecraft:overworld run tp @s -808.79 73.86 1998.77 -409.87 45.17
Avoma

Can confirm in 1.19.2.

Version: 1.19.2

Seed: -2178309719778189280
Coordinates: /execute in minecraft:overworld run tp @s -5792.10 69.25 -1546.76 -397.40 34.06
Cries

I suspect this may also be an issue on Bedrock since I've had monsters spawn on my Bedrock mushroom island too, but Bedrock doesn't have any way to view what biome I'm in so I can't prove it.

Cries

Is this also related to biome smoothing on the Y-axis?

Screenshot using MiniHUD to show ocean biome overlapping Mushroom Fields biome which allows monsters to spawn on a mooshroom island.

[media]
monkeybee

its still a thing in 1.19.4

seed : -9175794540101132335

tp : /tp -1258 64 -4490

monkeybee

(Unassigned)

Confirmed

Gameplay

Low

World generation

Minecraft 1.8.8, Minecraft 1.10.2, Minecraft 16w43a, Minecraft 1.11.2, Minecraft 1.12.2, ..., 1.19, 1.19.2, 1.19.4, 1.21.3, 24w46a

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