[BUG] TUI cut, unable to view full message

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?

Immediately after updating to the latest version, claude would only take up the top 2/5- 1/2 of the full terminal height.

On a related note, in the case I am in tmux, if I change the height of any panes the history gets cut off such that I am unable to scroll up at all.

If it is relevant, I primarily work over SSH to a local machine for everything.

What Should Happen?

Claude should take up most if not all of the available space

Error Messages/Logs

Steps to Reproduce

1. connect to target machine and go to desired directory
2. initiate claude with claude with or without flags
3. if wanting to recreate the tmux issue, resize the window with either mouse or bindings

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.60

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

Client OS: Macos Sequoia 15.6.1
Server OS: Ubuntu 24.04.3 LTS (baremetal)
Claude code installed via linuxbrew

<img width="1280" height="1416" alt="Image" src="https://github.com/user-attachments/assets/6a87ad97-039f-45b6-abfa-0ea953ded2e8" />

<img width="1278" height="1348" alt="Image" src="https://github.com/user-attachments/assets/965be8b7-3a74-4772-bccb-93d30e4d3e7e" />