Cowork: Hyperlinks in prompt input are lost on submission

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?

In Cowork's prompt input field, adding a hyperlink to text causes it to appear as a clickable link while typing. However, upon submission, the link information is stripped and the text reverts to plain text.

This behavior does not occur in the Claude chat interface, where hyperlinks are preserved correctly.

What Should Happen?

Hyperlinks added in the prompt input field should be preserved after submission, consistent with behavior in the Claude chat interface.

Error Messages/Logs

nothing

Steps to Reproduce

Steps to Reproduce

1. Open Cowork and navigate to the prompt input field.
2. Select a portion of text and attach a URL using the link feature.
3. Confirm the text appears as a hyperlink in the input field.
4. Submit the prompt.
5. Observe that the submitted text is plain text with no link.

Expected Behavior

Hyperlinks added in the prompt input field should be preserved after submission, consistent with behavior in the Claude chat interface.

Actual Behavior

Link information is lost on submission; text is rendered as plain text.

Environment

• App: Claude 1.1.9134 (87a63a) 2026-03-26T22:41:57.000Z
• Reproduction: Consistent
• Same issue in Claude chat: No (chat works correctly)

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.9134

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_