Main LLM call never executes. Session stuck on thinking after title generation. #26658

Description

After sending any message, opencode generates a session title (via anthropic/claude-haiku-4.5 on OpenRouter) but never makes the main inference call. The UI shows thinking (loading bar bottom left) indefinitely. No errors are logged.

Log evidence:
The title call fires and completes, then nothing:

service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 small=true agent=title mode=primary stream
service=bus type=session.updated publishing
service=default worker shutting down (after no activity for 5 minutes by me)

Models tested:
openrouter: minimax/minimax-m2.7, xiaomi/mimo-v2.5
opencode zen: nemotron-3-super-free, big-pickle

Attempted fixes:

• Fresh reinstall multiple times
• Cleared all config and cache
• Switched models and providers

Plugins

No response

OpenCode version

1.14.46

Steps to reproduce

1. Fresh install via curl -fsSL https://opencode.ai/install | bash
2. Run opencode and complete provider setup with OpenRouter API key
3. Select any model
4. Send any message. I sent "hello"
5. Title is generated successfully (openrouter log)
6. UI shows "thinking" — no response ever arrives

Screenshot and/or share link

Several log files:

2026-05-10T061636.log
2026-05-10T061637.log
2026-05-10T061708.log
2026-05-10T061709.log

Operating System

Ubuntu 24.04.4 LTS

Terminal

macOS Terminal