Spectators Generate Loot
Allows players to view newly-generated chests in spectator mode without switching to creative.
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Spectators Generate Loot
Spectators Generate Loot

Really tiny mod.
Works around the "Unable to open. Loot not generated yet." message, and allows you to view ungenerated chests in spectator mode without switching to creative.
This may result in different loot being generated than survival, particularly if the spectator has the Luck effect. The Luck effect cannot be obtained in Survival mode without cheats.