#json-schema

LocalLLaMA liked this because it was not another vague 'model feels worse' post. The thread isolated a concrete failure mode: nullable JSON Schema shapes were collapsing into empty type fields, and a small Jinja fix made Gemma 4's tool calling behave normally again.

A technical r/LocalLLaMA thread pointed to llama.cpp PR #19765, merged on February 20, 2026. The patch unifies parser paths as a stop-gap for Qwen3-Coder-Next issues and adds parallel tool-calling plus JSON schema fixes.