MC version: 1.20.1
Version: 1.20.1-9.1.37 (travelersbackpack-fabric-1.20.1-9.1.37.jar)
Launcher: modrinth

I can equip the backpack, but then I am unable to open it or place it, also unable to open the backpack's menu; only able to be opened when held in main hand.
It can still be placed in the world and accessed that way.

2. Write steps to reproduce the bug
   Put a backpack on

3. What is expected behaviour
   To be able to access the backpack

4. Screenshots (If applicable)

(If need be I can add the mods I'm using in a reply to this post)

Try changing keybind to any other key, just see different keys if it makes any difference

I tried changing the keybinds a couple times and still nothing.
Would you like the mod list to see if you can replicate the issue?

I found out which mods were causing the bug:

• Festive Delight
• Nethers Delight Refabricated
• [Deprecated] Farmer's Delight
• Faux Custom Entity Data