[BUG]

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?

Floating shapes out of the output window

<img width="212" height="376" alt="Image" src="https://github.com/user-attachments/assets/ebba1092-becb-4a43-a0f4-55a31d374ca8" />

What Should Happen?

Not flying shapes?

Error Messages/Logs

<img width="212" height="376" alt="Image" src="https://github.com/user-attachments/assets/ebba1092-becb-4a43-a0f4-55a31d374ca8" /> 
literally only this i have no errors besides this weird phenomenon

Steps to Reproduce

Pinky promise I swear I wish I'd know how to re-produce this.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.17

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

<img width="736" height="414" alt="Image" src="https://github.com/user-attachments/assets/739e6ce0-7fcc-408f-8d93-6b852e60a8c3" /> what is this, thought i was having a bad trip.