[BUG] Cowork: Code block copy button not working

[BUG] Cowork: Code block copy button not working

Environment

• Cowork Version: Research Preview (January 2025)
• OS: macOS
• Browser: (Please specify your browser version)

Bug Description

Symptom

• Copy button in code blocks within Cowork chat interface does not work
• Clicking the copy button produces no response (no clipboard copy, no visual feedback)
• Manual drag-select and copy (Cmd+C) works correctly

Steps to Reproduce

1. Start a Cowork session
2. Ask Claude to generate any code block (e.g., bash commands, Python code)
3. Click the copy button (clipboard icon) in the top-right corner of the code block
4. Try to paste (Cmd+V) anywhere → Nothing is pasted

Expected Behavior

• Clicking copy button should copy code block contents to clipboard
• Visual feedback (e.g., "Copied!" tooltip) should appear

Actual Behavior

• Copy button click has no effect
• No visual feedback
• Clipboard contents unchanged

Workaround

• Manual text selection (drag) + Cmd+C works as expected

Additional Context

• This bug was discovered while trying to copy bash commands for GitHub CLI issue submission
• The copy button appears clickable (cursor changes) but produces no action

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This report was auto-generated by Claude based on user experience during a Cowork session.