[Bug] [ConcurrentModificationException] Concurrently Modified Container StitchedSprite#ALL in modloading-worker thread

[Viola-Siemens]

Describe the bug

Crash with CMEs.

To Reproduce

Steps to reproduce the behavior:

1. Launch Minecraft with a multicore CPU.
2. Wait for the randomly crash. If it doesn't happen, try several more times.

Expected behavior

Fix it.

You should NOT modify the container in modloading-worker threads. Move it to main thread.

Screenshots
N/A

Desktop (please complete the following information):

• OS: Windows
• Minecraft Version: 1.20.1
• Forge Version: 47.4.6
• Mod Version: 1.7.2-fix1
• createdeco: 2.0.3-1.20.1-forge
• create: 6.0.6

Additional context

minecraft-exported-crash-info-2025-08-31T22-09-51.zip

I used this project to find this bug.

[Viola-Siemens]

talrey/CreateDeco#215