Claude in Chrome extension stops connecting spontaneously — MCP connected but extension reports not connected

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?

Description

The Claude in Chrome extension stops connecting spontaneously with no trigger. Once broken, standard troubleshooting does not recover it.

What happened

• MCP shows √ connected for claude-in-chrome
• Chrome tools return: "A extensão ainda não está conectada"
• Session memory/conversation saving stopped at the same time

What I tried (none worked)

• Extension installed and enabled in chrome://extensions/
• Logged into claude.ai in Chrome with correct account
• Completely uninstalled and reinstalled the Chrome extension
• Removed and re-added claude-in-chrome in mcpServers
• Restarted Claude Code multiple times
• claudeInChromeDefaultEnabled: true was already set
• Port 30900 is listening (process: core) — MCP server running
• No firewall or port conflicts

Environment

• OS: Windows 11 / PowerShell
• MCP server listening on 127.0.0.1:30900

What Should Happen?

Chrome extension should stay connected reliably. If connection drops, there should be a way to recover without reinstalling.

Error Messages/Logs

Steps to Reproduce

1. Set up Claude Code with claudeInChromeDefaultEnabled: true
2. Use Chrome integration normally
3. Extension stops connecting spontaneously (no clear trigger)
4. Reinstalling extension and restarting Claude Code does not fix it

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

 2.1.104

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

Session memory saving also broke at the same time, suggesting possible Claude Code state corruption.