It appears that in this seed the chunk generation here is glitched out and has created a strange hard border between the frozen ocean and the wooded hills biome.
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Just noticed that you're playing on a Paper server.
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However, this issue is Invalid.
Your game, launcher or server is modified.
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I can reproduce this issue in vanilla. it's very strange it looks like this biome generation error only affects ocean.
Reopened. This is not a chunk corruption, but a world generation issue. You can tell by the tree in the top left of the image, it is not cut off at the chunk border.