Problem/Bug Attribute LootTableSeed missing for generated containers with attached LootTable

Discussion in 'Bukkit Help' started by GsIF7, Nov 13, 2023.

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    I recently noticed that containers with attached LootTables in structures no longer store the LootTableSeed attribute, which results in non deterministic container content(when recreating a world with the same seed and reopening the same chest its contents will be different, which isn't vanilla behaviour).

    I first noticed the bug in 1.20.2 builds for paper but the current spigot and craftbukkit builds show the same behaviour, while the vanilla client/server still stores the LootTableSeed. So i would assume the bug was introduced by bukkit/craftbukkit.

    Steps to reproduce:
    • Generate a new world using the newest craftbukkit 1.20.2 jar
    • find a structure with containers
    • Pick one container(without opening it)
    • Save the world
    • Open the corresponding region file and search for the container
    • The container has the LootTable attribute attached, but is missing the LootTableSeed attribute
    When recreating these steps on a vanilla 1.20.2 server the LootTableSeed attribute is present.

    For some additional context:
    The bug was introduced to paper in build #204 still works, while 1.20 build #205 doesn't), so one of the merged changes will be its cause. I don't seem to be able to find old craftbukkit or spigot builds, so i'm unable to pin it down any further.
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    timtower Administrator Administrator Moderator

    @GsIF7 Told paper about it?
    As they are the ones that can actually fix it
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    No, not yet.
    How is paper involved if it also occurs in the craftbukkit and spigot builds? Don't they merge craftbukkit and spigot changes into their project?
    Last edited: Nov 13, 2023
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    timtower Administrator Administrator Moderator

    Well, you linked a paper repository so I went on that.
    Then report it to spigot as they make Bukkit these days
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