I upgraded a world from 1.17 to 1.18, and you can notice a weird border in surface blocks.
World Type: "Default"
No additional generation settings
Seed: 5076418555208188398
Render distance used: 16
Coordinates: First image: -300.36 167.43 105.22
Second image: -162.56 101.44 -430.94
Third image: -288.45 132.21 -430.79World download: https://drive.google.com/file/d/1DdjqAsOzzelO_3EfuwsF00daDq0JiA6W/view?usp=sharing
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I provided the additional information

I did the same test in pre release 5, no difference

The attatched zip is the world before upgrading so you can test it in any version yourself!
We do not have enough information to reproduce this issue.
Please provide the following information about the world you are playing in as text. Attaching a screenshot showing them is not enough.
World Type:
"Default" if you have not chosen one when creating the world.
For "Superflat": Additionally provide the generation preset.
For "Buffet": Additionally provide the generator type and biome you have selected.
Additional generation settings (in case you changed them): E.g. "Generate Structures", "Bonus Chest", ...
Seed: Can be obtained by using the
/seed
command and clicking on the message in chatCoordinates: Can be copied to clipboard by pressing
F3
+C
This issue is being temporarily closed as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
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