Snowballs aren't removed from inventory when sold

[K4sum1]

What is happening?

I made a shop and it has snowballs. One of the admins noticed that you could sell snowballs and they would not get removed from your inventory, making it possible to infinitely sell them.

What did you expect to happen?

Snowballs are removed from inventory.

Plugin Version

3.12.3-SNAPSHOT (build 371)

Plugin Config

config.txt

Server Version

Tuinity version git-Patina-ver/1.16.5-"667fb1b" (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)

Server Log

latest.log

What other plugins are you running?

Plugins (30): AsyncWorldEdit, AuctionHouse, AutoPickup, ChestShop, ClientStats*, CoreProtect, DeathMessages, DiscordSRV, Essentials, EssentialsChat, EssentialsProtect, EssentialsSpawn, GPFlags, GriefPrevention, HeadDrops, InventoryRollbackPlus, LiteSpawners, Lootin, LuckPerms, mcMMO, PickupArrows, RHLeafDecay, TAB, Vault, ViaBackwards, ViaRewind, ViaRewind-Legacy-Support, ViaVersion, WorldEdit, WorldGuard

Agreements

• I have checked if there are already similar issues open.
• I am running the latest development version available from https://ci.minebench.de/job/ChestShop-3/.
• The version has support for this type of issue.
• I have provided all requested information and agree to the terms of the project's license

Additional context

No response

[Phoenix616]

Please provide a screenshot of the shop sign as well as test if this is an issue too on pure Spigot or Paper (as I can't give any guarantee for your fork not breaking it) and ideally with no other plugins (that aren't need to get ChestShop running)

[K4sum1]

Sign on server

Sign and log from Paper + Essentials + Vault

latest.log

[K4sum1]

Forgot to mention but it happens with just Paper + Essentials + Vault