Describe the bug
As soon as anyone tries to send a chat message, everyone gets kicked from the server.

To Reproduce
Steps to reproduce the behavior:

1. Try to send a chat message

Expected behavior
Noone gets kicked and message is sent.

Server information:

• Debian 11
• Petal Spigot (with BungeeCord version: git:BungeeCord-Bootstrap:1.19-R0.1-SNAPSHOT:e717676:1672)
• 1.19.2
• Plugin list:
  • AdvancedReplay
  • AntiCheatReplay
  • BKCommonLib
  • ChestSort
  • DecentHolograms
  • EconomyShopGUI
  • FastAsyncWorldEdit (WorldEdit)
  • GriefPrevention
  • Iris
  • LeavesDecay
  • LuckPerms
  • Multiverse-Core
  • PlaceholderAPI
  • PlugManX (PlugMan)
  • PrefixSystem
  • Prism
  • ProtocolLib
  • QuickShop
  • RHLeafDecay
  • ServersNPC
  • ServerSystem
  • ShopSorter
  • SkBee
  • SkQuery
  • Skript
  • spark
  • TramaniaClasses
  • Vault
  • ViaBackwards (Only allowing 1.17 - 1.19.3 though, it's also not installed on the proxy)
  • ViaVersion
  • Vulcan
  • WorldEditSUI
  • WorldGuard

Latest log file
Not needed, there are no exceptions.
I triple and quadruple checked, it's not worth the censoring just to prove there are none

I dont see antipopup on the list

Also, I cannot work without logs, if you are worried you can either send them in private or/and just include relevant parts.
Unless there absolutely no relevant logs tho I doubt that, I don't even know what message players get on kick.

I dont see antipopup on the list

Yes, because this is the list after I removed AntiPopup because of this issue.

Also, I cannot work without logs, if you are worried you can either send them in private or/and just include relevant parts.
Unless there absolutely no relevant logs tho I doubt that, I don't even know what message players get on kick.

Here's a log from a copy of the server:
https://pastebin.com/HmXy6qbT

I checked the proxy log this time:
16:38:21 [WARNUNG] [TestAccount666] <-> DownstreamBridge <-> [TestFreebuild] - could not decode packet! java.lang.IndexOutOfBoundsException: readerIndex(1) + length(1) exceeds writerIndex(1): UnpooledSlicedByteBuf(ridx: 1, widx: 1, cap: 1/1, unwrapped: PooledUnsafeDirectByteBuf(ridx: 2, widx: 2, cap: 32768))

send me your config and server.properties (be sure not to leak anything)

Config:
https://pastebin.com/q964kphx

Server.properties:
https://pastebin.com/YknQmH91

Try a dev build.

@TheBlackEntity please confirm if it's fixed in spigot release.