[BUG] Text output is truncated/cut off at the beginning or middle of lines. Characters appear to be missing randomly from the output.

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?

Description

Text output is truncated/cut off at the beginning or middle of lines. Characters appear to be missing randomly from the output.

## Environment

• Claude Code version: 2.0.73
• OS: Windows 10/11
• Terminals tested: Windows Terminal, PowerShell, CMD
• All terminals show the same issue

## Screenshot
[Ekran görüntüsünü buraya ekleyin]

## Steps to reproduce

1. Start Claude Code in any Windows terminal
2. Have a conversation in Turkish (or any language)
3. Notice that parts of lines are missing/truncated

## Expected behavior
Full text should be displayed without truncation.

## Actual behavior
to read.

cs/claude-code/issues/new

<img width="1106" height="617" alt="Image" src="https://github.com/user-attachments/assets/a2b6cd08-7e9a-49e9-a684-6edf6b6ffcf5" />

<img width="1106" height="627" alt="Image" src="https://github.com/user-attachments/assets/afdd9929-acf8-4368-a27a-131a121b695c" />

<img width="1105" height="615" alt="Image" src="https://github.com/user-attachments/assets/f32f02e8-6f64-4f17-8331-20fbdb62ce59" />

What Should Happen?

Description

Text output is truncated/cut off at the beginning or middle of lines. Characters appear to be missing randomly from the output.

## Environment

• Claude Code version: 2.0.73
• OS: Windows 10/11
• Terminals tested: Windows Terminal, PowerShell, CMD
• All terminals show the same issue

## Screenshot
[Ekran görüntüsünü buraya ekleyin]

## Steps to reproduce

1. Start Claude Code in any Windows terminal
2. Have a conversation in Turkish (or any language)
3. Notice that parts of lines are missing/truncated

## Expected behavior
Full text should be displayed without truncation.

## Actual behavior

Error Messages/Logs

Steps to Reproduce

large claude.md file

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.73

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_