Dispatch session responses not rendering — TypeError: Cannot read properties of undefined (reading 'includes')

Environment

• Claude Desktop v1.1.9310
• macOS 26.3.1 (Tahoe, Apple Silicon)
• VM SDK v2.1.85

Description

Dispatch sessions process user messages successfully (backend logs show cycle_health: 'healthy', turns complete in 4-11s), but responses are not rendered in the UI. Messages appear as sent/read but no response is displayed — neither on macOS Desktop nor on the paired iOS device.

Root cause in logs

~/Library/Logs/Claude/claude.ai-web.log shows a recurring JavaScript error that fires on every turn:

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'includes')

This error correlates exactly with each completed Dispatch turn. Additional errors present:

[REACT_QUERY_CLIENT] QueryClient error: Error: ["account_profile"] data is undefined
[REACT_QUERY_CLIENT] QueryClient error: Error: Not found

Steps to reproduce

1. Open Claude Desktop → Dispatch tab
2. Send any message (from Desktop or paired iPhone)
3. Backend processes the message (visible in main.log: Turn succeeded, cycle_health: 'healthy')
4. No response rendered in UI

What was tried (none resolved the issue)

• App restart (killall + reopen)
• Logout and re-login (Desktop + iPhone)
• Delete conversation ("Unterhaltung löschen")
• Clear bridge-state.json (forced new session creation)
• Delete and reinstall iPhone Claude app
• Clear all Electron caches (Cache, Code Cache, GPUCache, Local Storage, Session Storage)
• Remove local-agent-mode-sessions directory

Relevant log excerpts

main.log — turns succeed:

[Result] Turn succeeded for session local_ditto_2acf8485-...
[CycleHealth] Healthy cycle: { cycle_health: 'healthy', seconds_to_outcome: 5 }

claude.ai-web.log — UI crashes on render:

21:18:55 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'includes')
21:20:33 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'includes')
21:21:38 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'includes')

Secondary issue encountered

During debugging, clearing bridge-state.json caused a persistent 409 registration conflict (A Cowork agent is already registered on [hostname]). Server-side registration could not be cleared from Desktop or iPhone — only resolved after deleting and reinstalling the iPhone app. There was no UI affordance to disconnect/deregister the stale registration.

🤖 Generated with Claude Code