You were right, thanks for reading it that closely. I checked template.go and rendered both templates on Ollama 0.40.7 with _debug_render_only: the old one put the first answer straight after a bare <|start|>assistant, with no channel header and no <|end|>, repeated the system block, and dropped SYSTEM. The post and the Modelfile in the GGUF repo now range over .Messages, send earlier answers back as final-channel messages closed with <|end|>, and turn SYSTEM into a developer message, the way Ollama's own gpt-oss template does. A single prompt renders byte for byte the same as before, which is why ollama run never showed it. I've credited you in the post.