ComfyUI SaveImage saves Ollama system prompt instead of generated prompt in PNG metadata
MaterialDonkey4605 · reddit · 2026-09-22
A Reddit user found that when OllamaGenerateV2 generates prompts dynamically in ComfyUI, the SaveImage node backtracks the execution graph and writes the huge static system prompt into PNG metadata instead of the evaluated string. Show Text / Display Any nodes don't block the backtracking; the poster has rigged a custom save node with a positiveoverride slot but seeks a cleaner fix. A known gotcha for anyone chaining LLM nodes inside subgraphs.
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