[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?

Title: Shift+Enter submits prompt instead of inserting newline, leaves ghost text in buffer

Description:

Shift+Enter (and Escape+Enter) submits the prompt instead of inserting a newline. After submission, the original text remains in the input buffer as ghost text.

Steps to reproduce:

1. Open Claude Code in any terminal
2. Type some text
3. Press Shift+Enter to add a new line
4. Prompt submits immediately instead of adding a newline
5. Original text remains in the input buffer

Expected behavior:
Shift+Enter should insert a newline without submitting.

Actual behavior:
Prompt submits and text persists in the buffer.

Environment:

• Claude Code version: 2.1.88
• OS: macOS (Mac Mini)
• Terminals tested: VS Code integrated terminal, Mac Terminal (standalone)
• Same behavior in both terminals

What Should Happen?

should create a new line

<img width="782" height="624" alt="Image" src="https://github.com/user-attachments/assets/8e020dd5-e9b1-40ab-a060-94caca71aa6a" />

Error Messages/Logs

Steps to Reproduce

talked to Claude Card and Claude Desktop

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.88.

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_