Inventory issue with Sophisticated Backpacks (#4) when crossing dimensions via command on a server

[Mnesikos]

Hello! I am still experiencing the exact issue described in #4, however only on a server when using commands to teleport to/from dimensions (for example using /back to get from the nether to the overworld).

Minecraft: Neoforge 1.21.1 - 21.1.217
Accessories: 1.1.0-beta.52+1.21.1
Accessories Compat Layer: 0.1.10+1.21.1
Sophisticated Backpacks: 1.21.1-3.25.24.1499
Sophisticated Core: 1.21.1-1.3.102.1368

Server is running
Arclight 1.21.1-1.0.2-SNAPSHOT-2e9399c
Essentials v2.22.0-dev+53-9ad754b

My client's latest.log outputs this line when the bug occurs:
[16Jan2026 13:20:42.955] [Render thread/ERROR] [sophisticatedbackpacks/]: Error getting backpack wrapper - Stack isn't a backpack

This seems to only be an issue server-side. I installed NeoEssentials, built a nether portal in a singleplayer world, then used /spawn to get back to the overworld and did not experience the bug.

[Dragon-Seeker]

First, you're using Arclight, which does not play nice with accessories because it brings a plugin ecosystem to a mod loader ecosystem that was never targeted so could be issues related to wisp-forest/accessories#356. Futhermore without a log of the server and client, can't really no for sure whats going on.

[Mnesikos]

Oops yep I meant to edit in logs, I'll grab them soon.

I think it very well could be related, however when initially reporting this issue, I myself did not have an issue opening the accessories screen at all but later learned another player had experienced it.

[CherrieTheShifter]

yes this, most mod compat, like built in workings/compat with curios and trinkets or some not built in, is missing, and this break some items being able to go in slots, like for example, create goggles in face like area idk, please fix this and more