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This repository was archived by the owner on Feb 9, 2026. It is now read-only.

Problem with entity exception in version 1.20.2 #95

@aweibuome

Description

@aweibuome

Expected behavior

Normal number of entities

Observed/Actual behavior

Too many entities, including cows, sheep, water creatures, zombie, and so on

Steps/models to reproduce

When I set the per-player-mob-spawns option in the paper-world-defaults.yml configuration file to true, although the server only has a few players online, the number of entities in an area has reached an astonishing 20,000 , cows, horses, and squids everywhere, it is impossible to kill them all. This problem does not exist in version 1.20.1. The monster spawning limit in the Bukkit configuration file is the default. When I set the per-player-mob-spawns option to false, the number of cows and sheep began to return to normal, but the refresh frequency of monsters was relatively low.
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This is the picture when set to true

Plugin and Datapack List

plugins:
[14:47:41 INFO]: Server Plugins (27):
[14:47:41 INFO]: Paper Plugins:
[14:47:41 INFO]: - HuskHomes
[14:47:41 INFO]: Bukkit Plugins:
[14:47:41 INFO]: - AntiPopup, Backuper, BetterRTP, BlockLocker, Chunky, CoreProtect, deathmsg1.1, FarmControl, GSit, headdrop
[14:47:41 INFO]: joinmsg, Kaiivoid, LuckPerms, makefly, MiniMOTD, MiraiMC, PlaceholderAPI, ProtocolLib, SeeMore, TAB
[14:47:41 INFO]: Towny, TownyChat,Vault, ViaBackwards, ViaRewind, ViaVersion

Kaiiju version

version
[14:49:03 INFO]: Checking version, please wait...
[14:49:04 INFO]: This server is running Kaiiju version git-Kaiiju-"daf406e" (MC: 1.20.2) (Implementing API version 1.20.2-R0.1-SNAPSHOT) (Git: daf406e on dev/1.20.2)
Unknown version

Other

1.20.2 Is per-player-mob-spawn optimized? Does this option have to be disabled? If it is not disabled, the number of entities will be abnormally large, but there is no such problem in 1.20.1

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