MC-125040Mushrooms in swamps replace trees
See attached screenshot. Weirdly, it didn't only replace the bottom log of the tree, but also the one above that.
To reproduce (steps are this way because of MC-55596):
1. Create a new world with seed 7913388302499728605
2. /tp @p 1017 104 10157
3. Fly (don't teleport!) to 1017 65 9657
4. Look at the tree.
Linked Issues
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
![[Mod] redstonehelper](../../../data/avatars/users/10122.svg){kind=small}
Created Issue:
Mushrooms in swamps replace trees
See attached screenshot. Weirdly, it didn't only replace the bottom log of the tree, but also the one above that.
To reproduce (steps are this way because of MC-55596):
1. Create a new world with seed 7913388302499728605
2. /tp @p 1017 104 10157
3. Fly (don't teleport!) to 1017 65 9657
4. Look at the tree.
Attachments1
2018-02-10_17.51.47.png
Added Linked Issues:
relates to
Added Linked Issues:
relates to
Added Linked Issues:
relates to
![[Mojang] Adrian Östergård](../../../data/assets/gravatar/nighter.jpeg){kind=small}
Added Assignee: 
ProfMobius (Thomas Guimbretiere)
ProfMobius (Thomas Guimbretiere)Deleted Comment:
Affects 18w22c
Added Fixed Versions: 1.13-pre2
Added Attachments:
Removed Fixed Versions: 1.13-pre2
![[Mojang] Nathan Adams](../../../data/assets/gravatar/dinnerbone.png){kind=small}
Removed Assignee: ProfMobius (Thomas Guimbretiere)
ProfMobius (Thomas Guimbretiere)Added Mojang Priority: Normal
Added Category: World generation
Removed Category: (Unassigned)
![[Mod] NeunEinser](../../../data/avatars/users/39263.png){kind=small}
Is this still an issue in 18w22c?
Cannot confirm in 1.13-pre1.
There is neither tree nor mushrooms at that coordinates.
The issue is most likely still present in the code, just the example we found doesn't exist anymore.
Without a working seed and coordinates, it is impossible to say whether this can still occur.
If anyone comes across that again, please provide a new seed + coordinates.