Problem

When using WebChat/Control UI, the AI is processing and generating output on the backend, but the frontend does not receive/display the streamed output. Only after manually refreshing the browser does the output appear immediately.

Symptoms

1. Frontend not updating: User sends a message, AI is thinking and generating output (confirmed by logs), but the UI shows nothing
2. Refresh reveals output: When user refreshes the browser, the output appears immediately (it was already there)
3. Message truncation/loss: Sometimes messages are truncated or lost entirely
4. Message misalignment: AI sometimes responds to a previous message instead of the current one
5. WebSocket terminated: WebChat connection randomly disconnects

Environment

• OpenClaw version: 2026.3.2
• Platform: WSL2 on Windows
• Access: Control UI at http://127.0.0.1:18789/
• Network: Tested with and without Clash proxy, problem persists in both cases

Log Evidence

21:25:46 [health-monitor] restarting (reason: stale-socket)
21:26:49 agent end: isError=true error=terminated
21:12:55 webchat disconnected code=1001 reason=n/a

The stale-socket issue occurs approximately every 30 minutes.

Root Cause Analysis

The issue appears to be related to WebSocket message push, not network connectivity:

Steps to Reproduce

1. Open Control UI at http://127.0.0.1:18789/
2. Send a message to the AI
3. Observe: AI is processing (visible in logs) but UI shows nothing
4. Refresh browser
5. Output appears immediately

Related Issues

• [Bug] OpenClaw UI WebSocket reconnect 导致会话 terminated #38090 (WebSocket reconnect)
• [Feature Request] Add slash commands autocomplete to WebChat/Control UI #38858 (slash commands autocomplete)

Frequency

Intermittent, but occurs multiple times per session. Makes normal usage very difficult.

Thanks for looking into this! 🦞