### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) 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? <h1 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal;

[BUG] Cowork (macOS): Anthropic sample prompts auto-submitted as user turns without any user input — triggered agentic runs that reached connected Google services

Status Open

Maintainer reply None cached

Activity 0 comments · opened Aug 25, 2026

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?

<head></head><h1 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">[BUG] Cowork (macOS): Anthropic sample prompts auto-submitted as user turns without any user input — triggered agentic runs that reached connected Google services</h1><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Preflight</h2><ul style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li>[x] I have searched existing issues</li><li>[x] This is a single bug report</li><li>[x] I am on the latest Claude for Mac build</li></ul><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">What's wrong</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">On three separate occasions, a prompt I never typed appeared as<span class="Apple-converted-space"> </span><strong>my own user turn</strong><span class="Apple-converted-space"> </span>in Cowork and was submitted automatically. Each one started a full agentic run: task planning, skill execution, connector calls, and file creation.</p><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The text of all three is not mine. It is polished English product copy in the same register as the built-in Scheduled task templates ("Daily briefing", "Inbox triage", etc.). I am a native Czech speaker and write to Claude in Czech. I did not click a suggestion card, did not use Dispatch, and had no scheduled task configured.</p><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The third occurrence happened while I was watching the screen. I have a screen recording of it.</p><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Environment</h2>
|
-- | --
App | Claude for Mac 1.34493.1 (255293)
OS | macOS, Apple Silicon
Surface | Cowork
Plan | Pro
Location | Prague, CZ
Connectors enabled at the time | Google Calendar, Google Drive (Gmail not connected)

<p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Two correlations stand out:</p><ol style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li>The Slack prompt timestamp matches the<span class="Apple-converted-space"> </span><strong>creation time of the Claude Desktop session</strong><span class="Apple-converted-space"> </span>to the minute.</li><li>The two dashboard prompts are<span class="Apple-converted-space"> </span><strong>byte-identical and one minute apart</strong>, matching the Safari session's last-activity timestamp.</li></ol><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Both suggest a trigger tied to session lifecycle rather than to a user interaction.</p><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Verbatim prompt text</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><strong>Runs 1 and 2 (identical):</strong></p><blockquote style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><p>Build me a personal dashboard that stays up to date on its own. Look at what you can reach — calendar, inbox, connected services — pick the two most useful things to track, and put up a live working version now. Label anything you had to fill with sample data, then ask me what to swap in.</p></blockquote><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><strong>Run 3:</strong></p><blockquote style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><p>Walk me through connecting Slack, then show me what I've missed: summarize my unread threads and DMs, rank the five that most need a reply from me today and say why, and draft a reply to the top one so I can review, edit, and send it myself.</p></blockquote><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">What the run did</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">From the tool log of the dashboard run (<code>Edited 21 files, used 9 tools, ran 8 commands</code>):</p><ul style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li>Searched memory; read Preferences, Profile, and Topics > Recent Work</li><li><code>list_calendars</code>,<span class="Apple-converted-space"> </span><code>list_events</code><span class="Apple-converted-space"> </span>(repeated)</li><li>Created five tasks: survey reachable data sources, pull live data, build and publish the dashboard artifact, set up recurring refresh, verify rendering</li><li>Ran skills<span class="Apple-converted-space"> </span><code>artifact-capabilities</code><span class="Apple-converted-space"> </span>and<span class="Apple-converted-space"> </span><code>artifact-design</code></li><li>Created and iteratively edited<span class="Apple-converted-space"> </span><code>/home/claude/call-sheet.html</code></li><li>Rendered headlessly via Playwright, read back screenshots, re-rendered</li><li>Requested<span class="Apple-converted-space"> </span><code>read_file_content</code><span class="Apple-converted-space"> </span>on a Google Drive file — this permission dialog was<span class="Apple-converted-space"> </span><strong>left unapproved</strong><span class="Apple-converted-space"> </span>and never granted</li></ul><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The generated artifact manifest declared:</p><pre style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><code class="language-json">{
"capabilities": {
"mcp": {
"servers": [
{ "server": "Google Calendar", "tools": ["list_events", "list_calendars"] }
]
}
},
"description": "A live seven-day agenda merged from every Google Calendar, plus booked hours per project against the previous week.",
"file_path": "/home/claude/call-sheet.html"
}
</code></pre><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">What I ruled out</h2><ul style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li><strong>Scheduled tasks</strong><span class="Apple-converted-space"> </span>— the Scheduled page is empty; no task has ever been created on this account</li><li><strong>Dispatch</strong><span class="Apple-converted-space"> </span>— not used; iOS session's last activity on Aug 24 was 8:16 AM, twelve hours before the evening run</li><li><strong>Account compromise</strong><span class="Apple-converted-space"> </span>— no session created on either incident date. Oldest-to-newest: Safari (created Aug 2), Claude Desktop (created Jun 27), Claude iOS (created Mar 12). All Prague, CZ.<span class="Apple-converted-space"> </span><strong>Trusted devices: none.</strong></li><li><strong>Third-party access</strong><span class="Apple-converted-space"> </span>— Google account activity log shows no foreign IPs; no forwarding rules, filters, delegation, passkeys, or recovery contacts I did not create</li><li><strong>Local malware</strong><span class="Apple-converted-space"> </span>— KnockKnock shows no unsigned or unexpected persistence (all launch items signed and notarized, kernel extensions and library inserts empty); Malwarebytes threat scan clean</li><li><strong>PromptFiction (<code>claude://</code><span class="Apple-converted-space"> </span>auto-submit)</strong><span class="Apple-converted-space"> </span>— my build is far newer than the 1.1.2321 fix</li></ul><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Expected behavior</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">A sample or template prompt should never be submitted as a user turn without an explicit user action. At minimum it should be pre-filled in the composer and require review and confirmation, the way the web app handles it.</p><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Actual behavior</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The prompt appears as a submitted user message and Claude immediately begins an agentic run against connected services and the sandbox filesystem.</p><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Why this matters</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">From the user's side this is indistinguishable from account compromise. I spent two days treating it as an intrusion: I froze two bank accounts, put the machine in Lockdown Mode, rotated every credential, and revoked all connectors. The observable signal — a stranger's instructions in my account, reaching for my calendar and inbox — is exactly what a takeover looks like.</p><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The blast radius here was small because Gmail was not connected and the Drive read was never approved. With a fuller connector set it would not have been.</p><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Question for the team</h2><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Server-side logs should show what initiated these three turns. Specifically:</p><ol style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li>What was the initiator for each of the three session IDs above — a click, a keyboard event, or a system-side trigger?</li><li>Why did the same prompt fire twice within one minute on Aug 23?</li><li>Is the correlation with session creation time on Aug 24 causal?</li></ol><h2 style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Attachments available on request</h2><ul style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><li>Screen recording of the Aug 24 run in progress (<code>Screen Recording 2026-08-24 at 20.21.20</code>)</li><li>Screenshots of both timestamped prompts with hover detail</li><li>Full tool log for the dashboard run</li><li>Account device list and Active sessions views</li><li>Gmail "Activity on this account" table showing the Drive OAuth client hits</li><li>KnockKnock JSON export and Malwarebytes scan report</li></ul><p style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The Drive<span class="Apple-converted-space"> </span><code>file_id</code><span class="Apple-converted-space"> </span>from the denied permission request is available privately; I have not included it here.</p>

What Should Happen?

A sample or template prompt should never be submitted as a user turn without an explicit user action. At minimum it should be pre-filled in the composer and require review and confirmation before running — the way the web app handles prompts, and the way claude:// prompts behave after the PromptFiction fix.

Error Messages/Logs

Steps to Reproduce

I cannot reproduce this on demand. It happened three times without any input from me. What I can provide is exact timing and session IDs so the trigger can be traced server-side.

Observed sequence:

Claude for Mac open, Cowork tab. Google Calendar and Google Drive connected, Gmail not connected. No scheduled tasks configured (Scheduled page empty). Dispatch not used.
Without any typing, clicking, or keyboard input from me, an English sample prompt appears as a submitted user turn.
Claude immediately starts an agentic run — reads memory, creates a task list, calls connectors, runs skills, writes and renders files.

<p dir="ltr" style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">Occurrences:</p><div dir="ltr" style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">
Timestamp (local, CEST) | Session ID
-- | --
Aug 23, 2026, 5:13 PM | cse_01BBCm2Gh1zWXErgCTgvSrT7
Aug 23, 2026, 5:14 PM | cse_01NTq1BiZhZwAfrJ51QViPuv
Aug 24, 2026, 8:09 PM | cse_01GysFAxu5ijicuygWV3gUAe

</div><p dir="ltr" style="caret-color: rgb(255, 255, 255); color: rgb(255, 255, 255); font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;">The two Aug 23 prompts are byte-identical and one minute apart. The Aug 24 prompt timestamp matches the creation time of my Claude Desktop session to the minute.</p>

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude for Mac 1.34493.1 (255293) — not Claude Code CLI; this is the Cowork surface in the desktop app

Platform

Other

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Note: this is a Cowork bug in the Claude for Mac desktop app, not Claude Code CLI. Some required fields above don't apply — Terminal/Shell in particular. Environment: Claude for Mac 1.34493.1 (255293), macOS Apple Silicon, Pro plan, Prague CZ.

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