[BUG] tools selector not followed by scroll when selection list is too large

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?

I'm creating agents and when I'm selecting the tools for this agent and show advanced options, the list is immense. And when I want to enable/disable tools that are at the top of the list the cursor is not visible because there is not a scroll functionality like less.

And when I scroll up my terminal to the top of the list it scrolls back to the bottom when I move the crusor.

What Should Happen?

A scroll functionality should be available to navigate through this list and keep the cursor visible.

Error Messages/Logs

Steps to Reproduce

1. Ensure you have mcps enabled with a lot of tools.
2. Create an agent through /agent command.
3. When selecting tools, toggle advanced options.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.96 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

Fastfetch info

OS: EndeavourOS x86_64
Kernel: Linux 6.19.9-arch1-1
Uptime: 3 hours, 52 mins
Shell: zsh 5.9
Terminal: ghostty 1.3.1-arch1
CPU: Intel(R) Core(TM) Ultra 7 155H (22) @ 4.80 GHz
GPU 1: NVIDIA GeForce RTX 4050 Max-Q / Mobile [Discrete]
GPU 2: Intel Arc Graphics @ 2.25 GHz [Integrated]
Locale: en_US.UTF-8