[BUG] Ubuntu/Gnome terminal screen flickering

Preflight Checklist

• [ ] 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?

This is a follow up from https://github.com/anthropics/claude-code/issues/769#issuecomment-3667690165

I still see flickering when Claude Code generates a lot of output: the view appears to jump repeatedly up to the beginning of the session and back to the bottom where Claude appends new output.

I'm on Ubuntu 24.04, with Gnome Terminal Version 3.52.0 for GNOME 46, a terminal emulator for the GNOME desktop, using VTE version 0.76.0 +BIDI +GNUTLS +ICU +SYSTEMD.

Here is the terminal size:

stty size
29 128

https://github.com/user-attachments/assets/cdae709e-bdcd-4dbe-8b42-de81e3b9d801

What Should Happen?

No flickering.

Error Messages/Logs

Steps to Reproduce

1. Build this project

``
git clone https://github.com/marcindulak/stt-mcp-server-linux
cd stt-mcp-server-linux
bash scripts/build_docker_image.sh
``

1. Start claude and ask it to run tests, twice

``
Run: bash scripts/test_unit.sh
Run: bash scripts/test_unit.sh
``

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.0.72

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

_No response_