[BUG] Cowork tab missing in Mac desktop app on latest build, personal account

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?

[BUG] Cowork tab missing in Mac desktop app on latest build, personal account

Preflight

• Searched existing issues; reports to date are Windows-specific (#48407, #49748)
• Single bug report
• Running latest version of Claude desktop app

What's wrong
The Cowork tab is absent from the sidebar navigation in the Mac desktop app. Sidebar shows only two top-level modes: Chat and Code. No Cowork entry is present, including under the collapsible "More" section.

Expected behaviour
Following Cowork's move to GA, the Cowork tab should be present in the sidebar alongside Chat and Code on personal accounts.

Environment

• Interface: Claude Desktop App
• OS: macOS
• Account type: Personal (Pro/Max), no workspace-level access controls in play
• App version: [fill in from Claude menu → About]

Steps to reproduce

1. Launch Claude desktop app on macOS
2. Observe sidebar — Cowork tab is not present
3. Expand "More" section — Cowork still not present
4. Restart app — issue persists

Additional notes
Existing bug reports on this issue (#48407, #49748) are Windows 11 only. This appears to be the first Mac report, which may be useful signal.

What Should Happen?

Button should appear

Error Messages/Logs

Steps to Reproduce

<img width="372" height="248" alt="Image" src="https://github.com/user-attachments/assets/499c7147-c97e-446b-9015-a0f2d7573d17" />

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.3109.0 (35cbf6)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

<img width="372" height="248" alt="Image" src="https://github.com/user-attachments/assets/04af8854-7aad-4a41-ad6a-40dc29814aef" />

<img width="372" height="248" alt="Image" src="https://github.com/user-attachments/assets/cf2b15fc-830e-4fdf-8a59-03e082d60865" />