So I am making a mesa town world and this happen
and A huge line biome of a snowy biome appeared. This is not just for this version. It has been happening ever since 1.3 Please fix :3
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CubeTheThird
migrated
If possible provide the seed AND location you are experiencing the issue in. The location can be obtained by pressing F3, the seed can be obtained by typing /seed
Can you post a screenshot?