Some biomes appear to be missing from the world generation. I've been comparing between the same world generated in 15w51b and 16w02a, and areas of the world generated in the latter snapshot have different (more common) biomes in place of those of the world generated in the former snapshot. For example, forest seems to be generating in place of flower forest. Also, I haven't (yet) found these less common biomes in 16w02a where they weren't being generated in 15w51b.
The affected biomes include flower forest and ice plains spikes, though there may be others.
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Need world seed and coordinates to confirm
CubeTheThird
Some screenshots would also be helpful.
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Seed (and coordinates) identified in the screenshots. In 15w51b, this is a flower forest. In 16w02a, this is a forest.
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Related: MC-95623
Ice Spikes biome no longer generates spikes.
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Looks like the "rare" areas are not determined by the generation process.
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According to tools like Amidst (https://github.com/Treer/AmidstExporter/releases) that call Minecraft's terrain generator, something changed from 15w51b to 16w02a, and no variant / M-types other than Sunflower Plains are being generated in 16w02a.
Erik Broes
Minor oopsie in a major refactor, should be fixed now 🙂
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\ö/
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confirmed fixed
Erik Broes