[Desktop] Cowork and Code unresponsive while Chat works fine

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Environment

• App: Claude Desktop v1.1.7714 (3bd6f6)
• Build date: 2026-03-19T14:50:53.000Z
• OS: macOS

Issue
After updating to this version, Cowork and Code are
slow to unresponsive at times. Chat works normally in the same session.

Additional context
Issue started immediately after update on 2026-03-19.
Status page shows yesterday's incidents as resolved.

What Should Happen?

Expected behavior
Code and Cowork functional as in previous version.

Error Messages/Logs

When asked "Are you online" I get "Working through a complex response... · 4m 35s and counting.

Steps to Reproduce

Steps to reproduce

1. Update Claude Desktop to v1.1.7714
2. Open app
3. Navigate to Code or Cowork
4. Attempt any action — no response

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.1.7714 (3bd6f6) 2026-03-19T14:50:53.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_

Logs
From ~/Library/Logs/Claude/*.log:

Key errors:

1. Repeated subagent session errors:

2026-03-19 23:19:52 [warn] [LOCAL_SESSION] Subagent parent not found for user message - possible out of order processing [object Object]

(repeated ~15+ times at same timestamp)

1. Unknown SDK message type:

2026-03-19 23:19:52 [warn] [LOCAL_SESSION] unknown sdk message type: rate_limit_event

Analysis

• App cannot handle rate_limit_event message type from API
• Subagent session queue breaking as a result
• Symptoms: Code and Cowork hang indefinitely, Chat unaffected
• Issue began immediately after updating to v1.1.7714
• Claude Code CLI unaffected on same machine