The texture of colored terracotta is not updated along with normal terracotta. This can be a problem when building with terracotta or exploring a badlands biome.
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is duplicated by 2
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While I doubt it can be used in any official capacity, here's a proposed fix for the issue
[media]
Provides the following texture difference:
[media]
Can confirm. Apparently the stained terracotta textures have been missed in the texture update and haven't been updated. They're exactly the same as before.