Bug: meta_data_filter=method: auto Silently Skips Vector Retrieval, Rendering Chat Completely Useless

用户在使用 RAGFlow 时,在 Chat 助手的 Advanced → Metadata Filtering 中启用了“Auto”模式,但知识库未配置任何 metadata 标签。结果是每次对话即使文档包含相关信息,也返回“No relevant content found”。该 Bug 不会输


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