[BUG] CPU usage spikes to 100% and becomes unresponsive after ~10 interactions when statusLine command is configured

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?

When configuring a statusLine with a command property in ~/.claude/settings.json, Claude Code becomes unresponsive after approximately 10
interactions, with CPU usage spiking to 100%.

The command line tool used for the status line is claude_code_statusline.

What Should Happen?

Claude Code should continue to respond normally regardless of the number of interactions, even with statusLine.command configured.

Error Messages/Logs

CPU usage spiking to 100%.

Steps to Reproduce

1. Install claude_code_statusline
2. Add a statusLine configuration with a command field to ~/.claude/settings.json:

``json
{
"statusLine": {
"command": "cc_sline"
}
}
``

1. Start Claude Code
2. Interact with Claude Code approximately 10 times

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.34

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_