Chunks in new chunk system unloaded instantly when player died, ignoring delay-chunk-unloads-by option

[jahua50]

Expected behavior

The chunk unload time is not instant and should follow the delay-chunk-unloads-by option.

Observed/Actual behavior

I used a weird method to find out the issue. Our server also have mythicmobs installed, and I set the mobs to only despawn when chunk unloads.

I first tried paper 1.19.2 build 307 (new chunk system). I spawn a mm mob, and let the mob kill me (so i return to spawn), and immediately I return to the death location using /back. The mob despawned. I also try this near server spawn (chunks near spawn are always loaded), and the mob did not despawn. After that I tried 1.19.2 build 172 (old chunk system). Using the same method above, the mm mob did not despawn.

I also tried refreshing configurations, removing all other plugins in the new chunk system, but everytime the mob will despawn outside the loaded spawn chunks.

from these information, I think that in the new chunk system (build 307), the chunks are unloaded instantly (less than 2 sec) after player death, and the mm mobs despawned instantly due to chunk unload. But in the paper per world config, I set the delay-chunk-unloads-by to 30s.

Steps/models to reproduce

As described in the above section.

Plugin and Datapack List

AdvancedPortals, AuctionHouse, BetterRTP, BungeeTabListPlus, ChatItem, ChestCleaner, ChestShop, Chunky, Citizens, CMILib, ConsoleSpamFix, CoreProtect, DeluxeMenus, DeluxeTags, DiscordSRV, dtlTradersPlus, DungeonParties, Essentials, EssentialsAntiBuild, EssentialsChat, EssentialsProtect, EssentialsSpawn, EvenMoreFish, ExcellentCrates, ExecutableItems, FastAsyncWorldEdit (WorldEdit), FlightControl, GadgetsMenu, GriefDefender, GSit, Guilds, Gunging_Ootilities_Plugin, Hat, HeadDatabase, HolographicDisplays, IllegalStack, Images, LibsDisguises, Lift, Lottery, LuckPerms, MarriageMaster, MessageAnnouncer, Minepacks, MMOCore, MMOItems, ModelEngine, Multiverse-Core, Multiverse-NetherPortals, MysqlEconomyBank, MythicDungeons, MythicLib, MythicMobs, NametagEdit, NexEngine, PacketListenerApi, PlaceholderAPI, PlayerPoints, Playtimes*, ProtocolLib, Referral, SCore, ServerTutorialPlus*, Stocks*, SuperVanish, TimeIsMoney, TitleManager, Vault, Votifier, WorldGuard, WorldGuardExtraFlags

Paper version

This server is running Paper version git-Paper-307 (MC: 1.19.2) (Implementing API version 1.19.2-R0.1-SNAPSHOT) (Git: 476ef25) You are running the latest version Previous version: git-Paper-173 (MC: 1.19.2)

Other

No response

[aerulion]

I can confirm the delay-chunk-unloads-by setting does not work at all for me. Even when moving a few blocks left to right the neighboring chunks are unloaded instantly. The same goes for teleporting, quitting, etc.. I'm using the newest version of paper and no plugins at all (except for a single test plugin logging chunk unloads).

[Baterka]

Same here

[molor]

I can confirm the delay-chunk-unloads-by setting does not work at all for me. Even when moving a few blocks left to right the neighboring chunks are unloaded instantly. The same goes for teleporting, quitting, etc.. I'm using the newest version of paper and no plugins at all (except for a single test plugin logging chunk unloads).

I'm set delay-chunk-unloads-by to 30s in my paper-world-defaults.yml but still observe the same issue in 1.20.1-68.