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MC-102440

Large oak trees not spawning or spawning abnormally in forest

Large oak trees fail to spawning or spawning abnormally in forest & forest hills in version 1.9.0,1.9.1,1.9.2,1.9.3&1.9.4.

seed:527160204975065564,version 1.9.4
When i create the world, there are some large oak trees generate normally,like picture-1. The tree at 484 284 is one of them.
But when i delete this world,close the game, restart the game, regenerate the world, there are not any large oak trees at all. The the trees,which are intended to be large oak trees,become one kind of "strange" small oak trees,they are different from normal small oak trees,they seem to have more leaves.Just like in the picture-2 below,The tree at 484 284 became small "strange" oak tree.just like in MC-10534.
When i restart the game,recreate the world again,all of the "strange" kind of trees become extremely large.they seem to be a lot bigger than normal large oak trees.Like in picture-3,the tree at 484 284 became extremely large.
When i repeat this step to restart the game and recreate the world for a lot of times,the 3 cases above seem to happen randomly.
It seems it's a bug: Sometimes large oak trees fail to generate,sometimes large oak trees become larger than designed.

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migrated

I think the spawning of Large Oak trees are random for each world created per play.

migrated

I mean once the game is opened, no matter which world i create, all of the big oak trees generated are all the same(one type of the 3 showed in the pictures).But when I close the game and restart it, the type of big oak trees may be changed to another kind, but all of the trees are still the same.
In Version 1.10 this problem still occurs.
The problem may be linked to MC-11208, i think.

migrated

Confirmed, suspecting similar cause as MC-77972.

GoodKingFilms

Can confirm, sometimes it will not generate Large Oaks even on the same seed, I created a map about 20 times until I finally got large oaks.

migrated

Confirmed for 1.10.2.

migrated

Confirmed in 16w36a. It seems to have something to do with a variable initialization. Sometimes, I can create a customized world (most often with a non-standard sea level) that generates tall oaks normally, but after quitting Minecraft and restarting, the same world file will only generate the smallest variant of tall oaks in new chunks.

migrated

Confirmed in 16w40a that large oaks do not spawn AT ALL in the forest biome anymore. Create a custom world with the biome set to "Forest" fly around and you will see that no large oak trees are spawning.

Possibly related to MC-30408

migrated

Not able to confirm that big trees are completely absent in 16w40a here. They are doing the goofy "only one size" thing though.

migrated

Can confirm what Zed Ontargs said. Behavior is the same as before.

GoodKingFilms

Can a mod please update this to 1.11? Thanks.

migrated

(Unassigned)

Confirmed

tree-generation, world-generation

Minecraft 1.9.2, Minecraft 1.9.3, Minecraft 1.9.4, Minecraft 1.10, Minecraft 1.10.2, Minecraft 16w36a, Minecraft 16w40a, Minecraft 1.11

Minecraft 18w07a

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