The flask does not work, when you right-click with the flask in your hand, nothing happens, but if you do it directly through the function, it works

To Reproduce
Steps to reproduce the behavior:

1. Download JakesBuildTools-v2.0.1.4-(1.21.1)-Data-Resource-Pack
2. Install it on Paper server
3. Try to use a Flask

Expected behavior
I expected the flask to work.

Video (From a player on my server )
https://streamable.com/b7cj9l

Datapack/Mod Version
JakesBuildTools-v2.0.1.4-(1.21.1)-Data-Resource-Pack

Plugin List
Server Plugins (60):
Paper Plugins:

• FeatherMorph, HidePlugins, Revaulting
  Bukkit Plugins:
• AuthMe, AxiomPaper, BreweryX, *BukkitOfUtils, Chunky, CoreProtect, Craftorithm, CrazyEnchantments, DeluxeMenus, DiscordReporter
  DiscordSRV, emotecraft, eShulkerBox, ExecutableItems, FastAsyncWorldEdit, FlectonePulse, ImageFrame, InfiniteFrame, Interactions, InventoryRollbackPlus
  InvSeePlusPlus, ItemEconomy, ItemsAdder, KissHug, LoneLibs, LuckPerms, ModelEngine, Multiverse-Core, Multiverse-NetherPortals, Multiverse-Portals
  MythicMobs, NBTAPI, packetevents, PlaceholderAPI, ProtocolLib, SCore, SimpleAutoRestart, SimpleHats, SkinsRestorer, SoulGraves
  Spawn, SuperVanish, TAB, TeaksTweaks, ValhallaMMO, ValhallaRaces, ValhallaTrinkets, Vanish, VariableEnderChests, Vault
  Vegas, voicechat, VoidGen, VSit, WorldGuard, *WorldLock, XaeroForceDisabler

Datapack List [If Applicable]
[vanilla (built-in)], [file/bukkit (world)], [paper (built-in)], [file/Incendium_1.21_UNSUPPORTED_PORT_v5.4.4.zip (world)], [file/banner-bedsheets-v1-6.zip (world)], [file/[1.21-1.21.7] Injured Effects v1.4.13.zip (world)], [file/horseswim_1.21.zip (world)], [file/banner-flags-v2-7.zip (world)], [file/stellarity_lite_3.0.5.6.zip (world)], [file/JBT.zip (world)]