MC-241592Trees can be cut off at new chunk boundries when upgrading a world to caves and cliffs world generation
The Bug
Just before 21w43a came out, the snapshot where terrain blending is added, I posted a feedback about 21w42a that mojang has already applied chunk blending for 1.17 worlds on trees, corals, and structures. The next day, I checked the newest snapshot. I recovered my 1.17 world and opened it in the snapshot to see how the chunk blending is applied, and discovered trees are split in half again. It mainly happens when the 1.17 biome is dark forest. I can confirm this bug for 21w44a and 1.18 Pre-release 1. On the bottom left of the photo you can see the version of the world.
Reproduce
- Create a world in 1.17.1 or lower
- Go to a biome with trees
- Close and open the world in 1.18 pre-release 1 or higher
- Go towards the new chunks
Observed Result
The trees were cut in half
Expected Result
The trees would not get cut in half
Linked Issues
is duplicated by2
Low
![[Mod] Jiingy](../../../data/avatars/users/91802.png){kind=small}
NormalCreated Issue:
Mojang accidentally removed chunck blending for trees since 21w43a
This may duplicate my previous bug
MC-239969, but that is wrongly marked as being fixed.Just before 21w43a came out, the snapshot where terrain blending is added, I posted a feedback about 21w42a that mojang has already applied chunk blending for 1.17 worlds on trees, corals, and structures. The next day, I checked the newest snapshot. I recovered my 1.17 world and opened it in the snapshot to see how the chunk blending is applied, and discovered trees are splitted in half again. It mainly happens when the 1.17 biome is dark forest. I can confirm this bug for 21w44a and 1.18 Pre-release 1. On the bottom left of the photo you can see the version of the world.
Attachments4
![[Mod] Anthony Cicinelli](../../../data/avatars/users/10122.svg){kind=small}
Mojang accidentally removed chunck blending for trees since 21w43aTrees from old chunks get cut off at new chunks
This may duplicate my previous bug
MC-239969, but that is wrongly marked as being fixed.Just before 21w43a came out, the snapshot where terrain blending is added, I posted a feedback about 21w42a that mojang has already applied chunk blending for 1.17 worlds on trees, corals, and structures. The next day, I checked the newest snapshot. I recovered my 1.17 world and opened it in the snapshot to see how the chunk blending is applied, and discovered trees are split
tedin half again. It mainly happens when the 1.17 biome is dark forest. I can confirm this bug for 21w44a and 1.18 Pre-release 1. On the bottom left of the photo you can see the version of the world.The Bug
Just before 21w43a came out, the snapshot where terrain blending is added, I posted a feedback about 21w42a that mojang has already applied chunk blending for 1.17 worlds on trees, corals, and structures. The next day, I checked the newest snapshot. I recovered my 1.17 world and opened it in the snapshot to see how the chunk blending is applied, and discovered trees are split in half again. It mainly happens when the 1.17 biome is dark forest. I can confirm this bug for 21w44a and 1.18 Pre-release 1. On the bottom left of the photo you can see the version of the world.
Reproduce
- Create a world in 1.17.1 or lower
- Go to a biome with trees
- Close and open the world in 1.18 pre-release 1 or higher
- Go towards the new chunks
Observed Result
The trees were cut in half
Expected Result
The trees would not get cut in half
Please supply your un-upgraded world and coords, if possible. This will help speed along the process.
relates to
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
is duplicated by
Upload the world on an external site (mediaire, dropbox, google drive) and share the link.
![[Mod] ampolive](../../../data/avatars/users/18949.svg){kind=small}
is duplicated by
![[Mod] Pokechu22](../../../data/avatars/users/92931.png){kind=small}
![[Mojang] slicedlime](../../../data/assets/gravatar/slicedlime.jpeg){kind=small}
![[Mod] turbo](../../../data/avatars/users/92867.png){kind=small}
relates to
Wrongly confirmed for 21w42a, but can confirm this is back since 21w43a. See MC-241592
Thank you for your report!
We're tracking this issue in MC-241592, so this ticket is being resolved and linked as a duplicate.
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📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
Thank you for your report!
We're tracking this issue in MC-241592, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
Chunk blending for trees was never actually a thing. When the tree generates in the newer chunk, it spreads to the old chunk, but when the tree generates in the old chunk, it doesn't spread to the new chunk. I can however confirm for 1.18 Pre-1. Relates to MC-125007
@Dmitry Konev You can see the pictures. They proove it was in 21w42a
Please supply your un-upgraded world and coords, if possible. This will help speed along the process.
It is unfortunately not possible to share files bigger than 10MB. The world is 32MB. But as I said, it happens mainly on dark forests. It doesn't happen on for example taiga.
You can attach the Google Drive link to your file instead
This seems related to MC-185253.
MC-241216has a world save "S3-1171.zip" saved in 1.17.1 that exhibits the issue after upgrading. Cut-off trees can be found at -57 32 and -32 33.Didn't manage to test this for Pre release 6 and 7 in time, but it is still in the game at Pre release 8
Still in release candidate 1
Can also affect structures such as village houses when at the edge of a chunk
@Bug bug it doesn't. The bug is caused by the way how tree generation changed from the newest update. On 1.17 it generated dependend on the seed. In the newest update it generates randomly. So the only way to fix this bug I think would be to implement a bit of the old generation inside 1.18's code.
I wonder if people would still notice this bug since everyone updated their world already. They might save this bug for when the next world generation update is coming and this biome blending is applied to that.
Can confirm in 1.20.4 and 23w41b:
Can the title be changed to something like:
"Trees can be cut off at new chunk boundries when upgrading a world to caves and cliffs world generation"
Can confirm in 1.21.4, but strangely enough this doesn't apply to dark oak forests, they regen normally (maybe to do with new pale garden terrain generation?)