0. ALWAYS PROVIDE INFORMATION ABOUT MODLOADER (Fabric / Forge) AND MOD VERSION (For Example 1.19.2-8.2.10)
   Minecraft: 1.20.1
   Forge: 47.3.22
   Mod Version: 9.1.19
1. Describe the bug
   Backpack unable to open
2. Write steps to reproduce the bug
   Get a backpack and fill it with at least 14 shulker box that full of fireworks
3. What is expected behaviour
   Backpack unable to open
4. Screenshots (If applicable)
   Log:
   [minecraft-exported-logs-2025-01-08T17-55-24.log]
   (https://github.com/user-attachments/files/18345482/minecraft-exported-logs-2025-01-08T17-55-24.log)

Also, I can open the backpack placed on ground and equip or un-equip it no matter whether there is too much shulker box in it.

Besides, there is no such problem in version 9.1.16

Fix will be released today, in about 5-6hours

https://www.curseforge.com/minecraft/mc-mods/travelers-backpack
Fixed