[BUG] VS Code extension: cannot scroll tool call commands that overflow horizontally

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?

commands that are longer than the visible width but not long enough to trigger the "expand" behavior can't be scrolled to see the full content.

<img width="518" height="127" alt="Image" src="https://github.com/user-attachments/assets/a5a75ad1-3395-4b69-9f3a-3ecd8b121435" />

What Should Happen?

i should be able to see what command was executed.

Error Messages/Logs

Steps to Reproduce

ask claude to execute this command echo "hello world this is a medium length command to test scrolling behavior"

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.88

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_