[BUG] Copying and pasting from terminal window - drops text

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?

Copying text out of the Claude Code terminal window silently drops sections. When I drag-select a long assistant response in the terminal (VS Code integrated terminal, macOS) and paste it into an email or document, multiple chunks of the text are missing — with no indication anything was lost. Started roughly 5–6 days ago, likely after an update; older sessions copied fine. Reproduces on long rendered responses, especially ones taller than the visible window that I scroll through while selecting. This is silent data loss for anyone whose output leaves via clipboard — I only caught it by proofreading sent emails. Workaround I'm using: having Claude write everything paste-bound to a text file and copying

What Should Happen?

Should be able to copy text while scrolling in claude code terminal window and paste it without sections missing

Error Messages/Logs

Steps to Reproduce

copy text in any claude window and scroll down to get the full text. paste it outside of claude code and there will be missing sections.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.238.

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_