[BUG] Cowork: "Run now" button disabled for scheduled tasks (desktop)

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?

The "Run now" ("Jetzt ausführen") action for scheduled/recurring Cowork tasks is greyed out and cannot be clicked — both from the "Scheduled" list on the home screen and from a task's edit view. This affects every scheduled task regardless of its cron expression or manual-only status.

The underlying scheduler itself still works correctly — tasks continue to run automatically at their configured times, and list_scheduled_tasks shows all tasks as enabled: true with recent lastRunAt timestamps. Only the manual "Run now" trigger in the UI is affected.

Environment

• Claude Desktop version: _(fill in — Settings → About, or Help → About Claude)_
• Windows version: _(fill in — e.g. Windows 11, winver)_
• Platform: Windows (desktop Cowork app)
• Affected since: approx. 2026-07-22 (last confirmed working run: 2026-07-21)
• Reported: 2026-07-23

Affected Tasks

| Task ID | Schedule | Last confirmed working |
|---|---|---|
| P001 summarize clippings | Manual only | 2026-07-19 |
| P002 reddit feed vorbereitung | Daily, 07:07 AM | 2026-07-21 |
| P002 report reddit claudeai | Manual only | 2026-07-21 |
| P002 report reddit obsidianmd | Manual only | 2026-07-21 |

What Should Happen?

The "Run now" button should be clickable and immediately trigger a one-off manual run of the selected scheduled task, independent of its automatic schedule — as it did until at least 2026-07-21.

Error Messages/Logs

Steps to Reproduce

Steps to Reproduce

1. Open Claude Desktop, go to the home screen.
2. Select "Geplant" (Scheduled) in the left sidebar.
3. Hover/select any scheduled task and open its context menu (or click "Bearbeiten"/Edit).
4. Observe: the "Jetzt ausführen" / "Run now" button is rendered but disabled (greyed out, not clickable) in both the list context menu and the task detail/edit view.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Yes — worked as recently as 2026-07-21.

Claude Code Version

1.24012.1

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

<img width="816" height="360" alt="Image" src="https://github.com/user-attachments/assets/dee92b7a-c0f5-45f7-87e8-0ea1d0618a44" />

<img width="600" height="502" alt="Image" src="https://github.com/user-attachments/assets/e31f75da-7bdb-4e47-b6c8-25a08f1525ec" />

<img width="1732" height="212" alt="Image" src="https://github.com/user-attachments/assets/8a7200e2-ab64-4ea6-8d5e-f55942c4b0a9" />