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Bug
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Resolution: Invalid
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None
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Minecraft 17w18b, Minecraft 1.12 Pre-Release 1, Minecraft 1.12 Pre-Release 2, Minecraft 1.12 Pre-Release 3
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None
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Windows 10 Home x64
Java 8 x64
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Unconfirmed
It is currently impossible to have items such as "Water bottles" as the icon for advancements. If no damage value is provided, the regeneration potion is provided. And specifying a damage value other than 0 causes a missing texture to appear.
On a slightly unrelated note, things like dyed armor or other items with important NBT data can't be set. Only the basic item can be.