[BUG]claude.json silently overwritten when file contains block comments (/* */)..LOST my COMPLETE MCP SERVES

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?

Config silently wiped. No error shown. All MCP servers lost permanently.

What Should Happen?

Config silently wiped. No error shown. All MCP servers lost permanently.

Error Messages/Logs

Steps to Reproduce

Have a working ~/.claude.json with MCP server config
Add / comment / block anywhere in the file
Save the file
Restart Claude Code

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.142 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_