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

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 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

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/0b3cff2e-53dc-4ffc-9165-7a4b4bcd109f" />

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

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/f7aaacd4-c98a-40a3-a2cf-bfdc8423cd85" />

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

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/1953bc48-7e2b-48d7-9f76-4cf4bda63e79" />

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

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/4bc9e7a9-c1a5-4e56-8d05-69a5c96329b1" />

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

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/b78a8233-8a09-4979-918f-61a784bd9aae" />
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/b5b5ac83-5489-4c77-a394-a5c9719f3c7b" />

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)