Environment:
• Addon: CLM (Core Loot Manager)
• Module: Auctioning / AutoAssign
• File: AutoAssign.lua
• Line: 27
• Game: WoW Retail 11.2 (Raid context)

Steps to Reproduce:
1. Enable automatic trading in CLM.
2. Have another player open a trade window with you.
3. Wait for the addon to attempt auto-trade item assignment.

Actual Result:
• Error is thrown in chat log:
CLM ERROR Error during handling TRADE_SHOW event: ...Manager/Modules/Auctioning/AutoAssign/AutoAssign.lua:27: invalid capture index

•	Automatic trade does not work.

Expected Result:
• Auto trade should complete successfully without throwing errors.

Frequency:
• Occurs periodically (not on every trade, but reproducible).