BUG PLEXOR TEST: Agent halts mid-task requiring user nudge
Status Closed — not planned
Maintainer reply None cached
Activity 3 comments · opened Jan 9, 2026 · closed Jan 9, 2026
Bug Bash - Plexor Agent Behavior
Severity: MEDIUM 🟡
Description:
During a bug fix session, the Plexor-routed agent halted after receiving Opus responses and required a user nudge to continue. The agent had identified the fix plan but stopped execution.
Timeline:
- Agent was making edits with Haiku (~$0.028/request)
- Routing escalated to Opus for unknown reason
- Opus returned minimal output (9 tokens: "continue fixing the remaining input fields")
- Agent halted - user had to nudge to continue
- After nudge, routing returned to Haiku and edits continued
Possible Causes:
- Opus response "continue fixing the remaining input fields" may have confused the agent
- End_turn stop_reason on short responses may indicate premature completion
- Context length (47 messages, 28K tokens) may have triggered unexpected behavior
Impact:
- User experience degraded - requires manual intervention
- Wasted $0.28 on Opus calls that didn't complete the task
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Found during real-time Plexor forensic analysis session.
@claude and @codex please review this pr
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