The Bug:
Igloos can generate floating.
Here is an example:
Version: 1.20.1
Seed: 1181589361754893118
Coordinates: /execute in minecraft:overworld run tp @s 93517.71 108.00 -2896.26 317.96 -6.43
Steps to Reproduce:
Generate a world with the seed provided above and teleport to the given coordinates.
Look closely at how the igloo has generated.
Take note as to whether or not igloos can generate floating.
Observed Behavior:
Igloos can generate floating.
Expected Behavior:
Igloos would not be able to generate floating. Instead, they should fill the air below them with some kind of block or just not be able to spawn floating altogether.
Linked issues
is duplicated by
relates to
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Can confirm. Saw this earlier when testing out the new snapshot.

Saw this earlier when testing out the new snapshot.
At what coordinates and with what seed ? 😉

I Used Custom World Settings Recreating won't work i need to find another one in a Normal World

You can load the old world, press F3 for coordinates and type /seed
in the chat. If you make a screenshot of that, you're done.

I tried recreating with the seed it just makes another World because when i created the World i changed generation settings of every block but if you want the seed 48572 but if you land on a Forest then it does not work for you either
One of the Settings i changed was the Biome size

I found another one but this time it is in the Ground Seed 48572 the coordinates are X: -3788 72 -3563

The Ground Igloo

Ok i found out how to recreate my old World
1. Click on create new World type in the Seed after that goto Word Type and set it to custom click on that custom Button under World Type the Third Button on the Bottom and type in The Textbar above
{"coordinateScale":684.412,"heightScale":684.412,"lowerLimitScale":512.0,"upperLimitScale":512.0,"depthNoiseScaleX":200.0,"depthNoiseScaleZ":200.0,"depthNoiseScaleExponent":0.5,"mainNoiseScaleX":80.0,"mainNoiseScaleY":160.0,"mainNoiseScaleZ":80.0,"baseSize":8.5,"stretchY":12.0,"biomeDepthWeight":1.0,"biomeDepthOffset":0.0,"biomeScaleWeight":1.0,"biomeScaleOffset":0.0,"seaLevel":63,"useCaves":true,"useDungeons":true,"dungeonChance":100,"useStrongholds":true,"useVillages":true,"useMineShafts":true,"useTemples":true,"useMonuments":true,"useRavines":true,"useWaterLakes":true,"waterLakeChance":40,"useLavaLakes":true,"lavaLakeChance":80,"useLavaOceans":false,"fixedBiome":-1,"biomeSize":1,"riverSize":4,"dirtSize":33,"dirtCount":40,"dirtMinHeight":0,"dirtMaxHeight":256,"gravelSize":33,"gravelCount":40,"gravelMinHeight":0,"gravelMaxHeight":256,"graniteSize":33,"graniteCount":40,"graniteMinHeight":0,"graniteMaxHeight":80,"dioriteSize":33,"dioriteCount":40,"dioriteMinHeight":0,"dioriteMaxHeight":80,"andesiteSize":33,"andesiteCount":40,"andesiteMinHeight":0,"andesiteMaxHeight":80,"coalSize":17,"coalCount":40,"coalMinHeight":0,"coalMaxHeight":128,"ironSize":9,"ironCount":40,"ironMinHeight":0,"ironMaxHeight":64,"goldSize":9,"goldCount":40,"goldMinHeight":0,"goldMaxHeight":32,"redstoneSize":8,"redstoneCount":40,"redstoneMinHeight":0,"redstoneMaxHeight":16,"diamondSize":8,"diamondCount":40,"diamondMinHeight":0,"diamondMaxHeight":16,"lapisSize":7,"lapisCount":40,"lapisCenterHeight":16,"lapisSpread":16}
then TP to -921 69 294

Thanks.

Hope you can get it i come back tomorrow
if you need help with that
Added three pictures of an igloo on ice, not sure if this belongs here though.

For 15w44b

@enderdragon,
That looks okay to me... Why could an iglo not be on ice?

@Valentijn Kas Because naturally generated ice only remains ice if there are no blocks above it. It's not standing on ice; it's standing on water.

I observed an igloo with the basement trapdoor, except it'd spawned above empty air and thus didn't contain the basement it usually would have.
[media]
Confirmed for 1.14.4.
Seed: -3038033905908571340
Coordinates: /tp @p 8755 66 597

Confirmed in 1.15.2 and 1.16 Release Candidate 1 using the seed provided by @unknown.
Can confirm in 20w49a using the seed and coordinates provided by Loek van Vucht.
Can confirm in 20w51a. Here an extra seed along with coordinates.
Seed: 2497334744588602023
Coordinates: /execute in minecraft:overworld run tp @p -1227 64 -1296 30 -50
Can confirm in 21w05b.
Can confirm in 1.16.5 and 21w08b.
Relates to MC-140452.
Can confirm in 21w11a.

Can confirm in 1.17.1.

this issue is fixed in 20w40a?

Confirmed in 21w41a
I can confirm this in 21w41a. Here are some extra details regarding this problem.
The Bug:
Igloos can spawn floating in the air.
Steps to Reproduce:
Enter the following seed and coordinates.
Seed: 1130276759206161101
Coordinates: /tp @s -255 149 -1505
Take note as to whether or not igloos can spawn floating in the air.
Observed Behavior:
Igloos can spawn floating in the air.
Expected Behavior:
Igloos would not be able to spawn floating in the air. Instead, they should fill the air below them with some kind of block or just not be able to spawn floating altogether.

Confirmed in 21w44a
seed: -2744854254946197173
coords: /execute in minecraft:overworld run tp @s 176.36 67.49 32.27 782.22 19.07

Confirmed in 1.18-pre1
Seed = 3327488709299075106
Co-ords = x: 1,883; z:45
Igloo spawned on edge of snow and plains biome on edge of mountain...

Confirmed in 1.18-pre2
Â
Seed: -8814849657706892925
Coords: -1788 134 4949

Confirmed in 1.18 release
Seed: 4234567491579355864
Coords: -896 71 69
Can confirm in 1.18.2.
[media]Version: 1.18.2
Seed: 5674588914129534515
Coordinates: /execute in minecraft:overworld run tp @s 60027 67 6382 495 -22
Can confirm in 1.19.
[media]Version: 1.19
Seed: 3032665062407875672
Coordinates: /execute in minecraft:overworld run tp @s 35482.31 136.12 8340.89 -94.10 -10.41
Can confirm in 1.19.2.
Version: 1.19.2
Seed: -2055074493936140863
Coordinates: /execute in minecraft:overworld run tp @s -1000.34 95.00 613.40 85.13 -14.68

Not sure if this belongs here or in MC-238539, but I found this:
[media]

Confirmed in 1.21.3Â
Seed: -3390758632542633744
Coordinates: 7386, 75, 7216
Please provide seed and coordinates.