[BUG] when claude on interactive mode will use 100% cpu(one core) on macOS

[wicowen]

Preflight Checklist

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

What's Wrong?

• when i use claude code doing multi task on different project,
  and hang on interactive prompts,
  the process will use 100% one core cpu let my macbook air on high temperature (75~80c)

• this issue was keep a long time from v2.0.2x -> v2.0.36(now),
  it let me very nervous me when i run tasks and AFK.

What Should Happen?

not use 100% cpu on interactive mode

Error Messages/Logs

Steps to Reproduce

• step 1. use prompts i'm debug, show a interactive prompts for me (use english) trigger interactive mode

• step 2. interactive input show (you can see the cpu usage & temperature is normal)

• step 3. the process start use 100% cpu (one core?)

• step 4. the process temperature from 47c -> 70c on 2 min

• step 5. after stop interactive mode the cpu usage & temperature back to normal

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

v2.0.36

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

• both iterm2 & macOS terminal have this issue

• others info
  MacBook Air M1, 2020
  Chip: Apple M1
  Memory: 16 GB
  macOS: Tahoe 26.0.1

Claude Code:

/doctor
Diagnostics
└ Currently running: npm-local (2.0.36)
└ Path: ~/.nvm/versions/node/v22.17.1/bin/node
└ Invoked: ~/.claude/local/node_modules/.bin/claude
└ Config install method: local
└ Auto-updates: default (true)
└ Search: OK (vendor)

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] 100% CPU Usage During Plan Mode Prompts #10163
2. [Bug] Claude Code consuming excessive CPU resources at 100%+ #10090
3. [BUG] Claude Code hangs if you type too much into its "questions" tool #11217

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.