[BUG] Terminal panel auto-pastes copied chat command on Windows, but not on macOS

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?

Describe the bug
When I copy a shell command from a code block in a Claude Code chat response and then open (or switch to) the Terminal panel, the copied command is automatically pasted into the terminal prompt on Windows — ready to run, without me manually pasting it. On macOS, this does not happen; I have to paste manually every time.

Steps to reproduce

1. In a Claude Code chat, get a response containing a shell command in a code block.
2. Copy the command text.
3. Open (or switch focus to) the integrated Terminal panel.

Expected behavior
Consistent behavior across platforms — either both auto-paste, or neither does.

Actual behavior

• Windows (Dell laptop): copied command auto-appears in the terminal prompt when the panel is opened.
• macOS (MacBook): copied command does not appear; manual paste (Cmd+V) is required.

Environment

• Windows: Windows 11 Pro, Claude Code desktop app
• macOS: MacBook, Claude Code desktop app
• (please fill in exact app version from both machines — Settings/About)

Request
Please clarify whether this auto-paste is an intentional Claude Code feature (and if so, enable it on macOS too), or an unrelated Windows-side behavior (e.g. Windows Terminal / clipboard integration) that happens to look like a Claude Code feature.

What Should Happen?

Run it on Mac OS

Error Messages/Logs

no

Steps to Reproduce

1. In a Claude Code chat, get a response containing a shell command in a code block.
2. Copy the command text (e.g. via the copy button on the code block).
3. Open, or switch focus to, the integrated Terminal panel.
4. Observe whether the copied command appears already pasted into the terminal prompt.

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.163

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_