/sell GUI sometimes stops detecting items after selling once

[RADD95]

Description

The /sell GUI sometimes fails to detect items added with shift-click.

Normal clicking/dragging items into the GUI does not seem to work properly, so I use shift-click to move items into the sell interface instead. The items appear inside the GUI correctly, but when pressing the sell button, the plugin sometimes says:

Nothing to sell

even though valid sellable items are clearly present inside the GUI.

/sellhand still works correctly with the same items.

Server Environment

• Minecraft Version: 1.26.1.2
• Server Version: Paper 1.26.1.2-63
• Java Version: Java 25
• Plugin Version: EzShops v2.5.3

Steps to Reproduce

1. Run /sell
2. Open the sell GUI
3. Shift-click sellable items into the interface
4. Press the sell button
5. The first sell sometimes works correctly
6. Try selling more of the same item again using the same GUI
7. The sell button may stop working completely and display Nothing to sell
8. Selling a different item sometimes makes the GUI work again temporarily

Additional Context

• The issue only happens in the /sell GUI
• /sellhand works normally with the same items
• Shift-click appears to be the only reliable way to move items into the GUI
• The issue seems inconsistent/random
• The sell GUI may stop detecting items after the first successful sale until another item type is inserted
• This may be related to inventory refresh/state handling after completing a sale

[ez-plugins]

@RADD95 issues should be solved in latest 2.5.4 version.