[BUG] Claude Desktop (MacOS) 1.2581.0 (f10398) crashes when using COPY TO CLIPBOARD.

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?

After updating to the latest version of Claude Desktop for MacOS and using Claude Code, any attempt to right click Copy to Clipboard causes an immediate hang, followed by a blank UI and no responsiveness. Remmediation requires Quit and Restart to continue.

What Should Happen?

When clicking on Copy to Clipboard the highlighted text should be copied to MacOS clipboard and the Claude Destkop App should not hang.

Error Messages/Logs

None.

Steps to Reproduce

1. Select Text from Claude Code transcript from within the Claude Desktop UI
2. Right click on selected text.
3. Select Copy to Clipboard

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Previous release to this one.

Claude Code Version

Claude 1.2581.0 (f10398) 2026-04-14T17:16:40.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_