A small client-side fix for **Chisels & Bits 20.1.20 on Forge 1.20.1**.
Prevents a `ConcurrentModificationException` in Chisels & Bits' chunk-load model refresh, which can interrupt incoming chunk processing and leave terrain invisible.
- Preserves normal chiseled-block model updates.
- No configuration or server installation required.
- Install alongside Chisels & Bits, then restart Minecraft.
Unofficial compatibility patch, not affiliated with the Chisels & Bits team.