Open WebUI

Identified and fixed a bug in Open WebUI where the DEFAULT_FOLLOW_UP_GENERATION_PROMPT_TEMPLATE contained contradictory output format instructions. The Guidelines section instructed LLMs to return a JSON array, while the frontend parser expected a JSON object with a follow_ups key. When an LLM followed the array instruction, the parser found no object delimiters and the UI showed no follow-up suggestions.

• 01Identified root cause of silent follow-up suggestion failures
• 02Traced the data flow from backend prompt template through LLM response to frontend parser
• 03Corrected the Guidelines instruction to match the Output section and frontend parser expectations
• 04PR merged into the main codebase by the project maintainer

The fix resolved follow-up suggestion failures for users across the Open WebUI platform. PR was reviewed and merged by the project creator.