0. ALWAYS PROVIDE INFORMATION ABOUT MODLOADER (Fabric / Forge) AND MOD VERSION (For Example 1.19.2-8.2.10)

Fabric 0.17.2-1.21.8
Traveler's Backpack 10.8.0

1. Describe the bug

Equipped Backpack disappear with items and without them after rejoin in world

2. Write steps to reproduce the bug

3. Create new world,

4. Give yourself backpack,

5. Equip it,

6. Rejoin

7. What is expected behaviour

Equipped backpack disappear with items/without them if be empty

can you provide game logs?

What launcher do you use?

latest.log here logs

please upload your mod folder as zip somewhere and give me a link to download. I will check that when I get home

Legacy Launcher yet I remember that on 1.19.4 mod working fine...

Here's link

Please use 10.8.1 if possible and see if it happens

Also I need information if you use any mod that adds back slot. People from my Discord say that the bug like this doesnt happen

Still happening and here's modlist cuz I dunno what mod adds back slot... resource backpacks there only cuz I use it as alternative yet it's add different slot for backpack as long as I know...

modlist.txt

The issue is Very Many Players (Fabric) mod. Why it happens I don't know but removing the mod stops backpack from disappearing. I'd suggest to report it to Very Many Players dev

Strange... well it's not that big problem so I would just remove it cuz I check issues on that mod and it's incompatible with different mods for unknown reason...

Yeah, so I leave it up to you, closing this issue