PaperMC / PaperMC/Paper

Trial Chamber Vault modifications via datapack not working on paper

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status: needs triage version: 26.1.1
Dominant language
Java
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Description

Expected behavior

I should be able to use a datapack to modify trial chambers to allow them to be opened periodically to make them more SMP friendly. Each kind of vault (normal and ominous) has a separate configured timer, and should be independent of each other. Normal vault works as expected - ominous does not (will attach video)

https://drive.google.com/file/d/1cVbACIUCnlLA3QtJiZ5BKj_doYGnNnQ0/view?usp=sharing

Observed/Actual behavior

Ominous vault is not able to be manually configured and seems to operate on the same timer as the normal vault

https://drive.google.com/file/d/1aOTsCc-7maDVGvPEVjKbPsJtA1NCEm7L/view?usp=sharing

Steps/models to reproduce

Videos linked show how it works

Plugin and Datapack List

[05:11:09 INFO]: There are 24 data pack(s) enabled: [vanilla (built-in)], [file/bukkit (world)], [paper (built-in)], [file/[DP] Boredom Tweaks R1.21.11.zip (world)], [file/[DP] Custom Vaults R1.21.11.zip (world)], [file/BlazeandCave's Advancements Pack 1.20.3.zip (world)], [file/armor statues v2.8.22 (MC 26.1).zip (world)], [file/custom nether portals v2.3.19 (MC 26.1).zip (world)], [file/durability ping v1.1.17 (MC 26.1).zip (world)], [file/fast leaf decay v2.0.21 (MC 26.1).zip (world)], [file/hsings-26.1.zip (world)], [file/husks drop sand v1.0.9 (MC 26.1).zip (world)], [file/mini blocks v1.1.6 (MC 26.1).zip (world)], [file/more mob heads v2.19.0 (MC 26.1).zip (world)], [file/painting picker v1.1.3 (MC 26.1).zip (world)], [file/player head drops v1.1.16 (MC 26.1).zip (world)], [file/silence mobs v1.2.10 (MC 26.1).zip (world)], [file/track raw statistics v1.7.12 (MC 26.1).zip (world)], [file/track statistics v1.1.18 (MC 26.1).zip (world)], [file/unlock all recipes v2.0.17 (MC 26.1).zip (world)], [file/villager workstation highlights v1.1.16 (MC 26.1).zip (world)], [file/[DP] Warden Custom Drops R1.21.11.zip (world)], [file/hatbag_ruins.zip (world)], [file/Hatbag_fixed.zip (world)]
[05:11:09 INFO]: There are no more data packs available

[05:11:29 INFO]: - IgniteBluemapMarker, PlugManX, WanderingTrades, ZDeathMessages
[05:11:29 INFO]: Bukkit Plugins (49):
[05:11:29 INFO]: - AdvancedPortals, ajLeaderboards, ajQueue, bCosmo, BlueMap, BlueMapPlayerControl, Chunky, Citizens, CoreProtect, DecentHolograms
[05:11:29 INFO]: Denizen, DiscordSRV-Staff-Chat, EntityDetection, eShulkerBox, Essentials, EssentialsSpawn, FancyGlow, FarmLimiter, GSit, HexNicks
[05:11:29 INFO]: ImageFrame, InventoryRollbackPlus, InvStations, LiteBans, LPC, LuckPerms, MinecraftStats, MobGriefBypass, NightVision, NoChatReports
[05:11:29 INFO]: OpenInv, packetevents, PhantomControl, PlaceholderAPI, RaidTracker, SimplePets, SinglePlayerSleep, SuperVanish, TAB, TogglePvp
[05:11:29 INFO]: UltimateAutoRestart, Vault, voicechat, Votifier, VotingPlugin, WorldEdit, WorldGuard, WorldGuardExtraFlags, ZStatus

(several of those plugins are broken as they arent updated yet)

Paper version

[05:12:05 INFO]: This server is running Paper version 26.1.1-29-dev/26.1@77c0866 (2026-04-06T17:01:17Z) (Implementing API version 26.1.1.build.29-alpha)
You are running the latest version
Previous version: 26.1.1-16-f9da803 (MC: 26.1.1)

Other

due to the datapack being commissioned for our server and that we paid for it - I cant post it as a public file. If i can have direct communication with the Paper team, im happy to provide it for testing.

I am in the discord my name is Zenologia

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No source files or tests are named. Start by obtaining the private custom vault datapack and reproducing the normal and ominous vault timer behavior on the reported Paper version with the listed datapacks. Done means confirming whether the ominous vault can be configured independently and identifying a reproducible Paper-side failure.

Written by the indexing model from the issue text.

Assessment

Domain
game-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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