[BUG] Visual feedback on thinking mode not working

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 thinking mode is enabled, no visual feedback is provided. When Whinking mode is disabled, no visual feedback is provided.

What Should Happen?

visual feedback whether whether mode is enabled or disabled. e.g. blue outlines for on and gray for off.

Error Messages/Logs

Steps to Reproduce

1. open/use claude code.
2. look around and wondering whether thinking is enabled or disabled

---

1. open/use claude code
2. execute some prompts
3. look around and wondering whether thinking is enabled or disabled

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.0.65.

Claude Code Version

2.0.71

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

_No response_