[BUG] Cmd+C no longer copies selected text on macOS after /tui update

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?

Cmd+C no longer copies selected text to the clipboard on macOS. Only Ctrl+C works for copying. The status bar now shows "ctrl+c to copy" instead of the macOS-standard Cmd+C.

This broke after the update that introduced /tui. Previously, Cmd+C worked as expected for copying selected text.
Using iTerm 2.

What Should Happen?

Cmd+C should copy selected text to the clipboard, as it is the standard macOS copy shortcut.

Error Messages/Logs

No error messages. Cmd+C silently does nothing - text is not copied to clipboard.

Steps to Reproduce

1. Open Claude Code in iTerm2 on macOS
2. Have Claude generate a response with text
3. Select text (mouse or shift+arrow keys)
4. Press Cmd+C
5. Attempt to paste (Cmd+V) in any application — nothing was copied
6. Go back and press Ctrl+C instead — text is copied successfully

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.109

Claude Code Version

2.1.110 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

• Attempted workaround: added custom keybinding (cmd+c → selection:copy in Global context) via ~/.claude/keybindings.json — did not resolve the issue.
• Related issue: #43942 (TUI overrides terminal clipboard shortcuts)
• cmd+c is listed as a macOS reserved shortcut in Claude Code's keybindings docs, which may be why it's being blocked by the TUI input handler.