anvil inventory deleting items

[SubGplayz]

Skript/Server Version

[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Skript's aliases can be found here: https://github.com/SkriptLang/skript-aliases
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Skript's documentation can be found here: https://docs.skriptlang.org/
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Skript's tutorials can be found here: https://docs.skriptlang.org/tutorials
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Server Version: git-Purpur-2062 (MC: 1.20.1)
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Skript Version: 2.8.4 (skriptlang-github)
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Installed Skript Addons: 
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - skript-placeholders v1.6.0 (https://github.com/APickledWalrus/skript-placeholders)
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - SkBee v3.4.3 (https://github.com/ShaneBeee/SkBee)
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - skript-oraxen v1.0
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - SkVault v2.0
[22:36:10] [Render thread/INFO]: [CHAT] [Skript] Installed dependencies: 
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - Vault v1.7.3-b131
[22:36:10] [Render thread/INFO]: [CHAT] [Skript]  - WorldGuard v7.0.9+5934e49

Bug Description

When I open an anvil inventory to the player and shift click an item into the gui, it deletes the item.

Expected Behavior

When shift clicking the item into the gui, it should not delete the item, and should act the same as a vanilla anvil.

Steps to Reproduce

1. use the following skript:

   command /anvil:
   trigger:
       show anvil inventory for player

2. run the command /anvil

3. shift click an item into the anvil gui

Errors or Screenshots

https://youtu.be/G-7mAv2HEYQ

Other

No response

Agreement

• [X] I have read the guidelines above and affirm I am following them with this report.

[sovdeeth]

duplicate of #6470