anthropics / anthropics/claude-code

I need more information about the actual bug or issue you're experiencing with Claude Code to generate an appropriate GitHub issue title. Could you please provide: 1. What error or problem are you encountering? 2. What were you trying to do when it happen

Open
#92,940 0 comments 0 reactions 0 assignees View on GitHub
area:tui duplicate platform:windows
Dominant language
Python
Stars
145k
Forks
23.1k
PR merge metrics
PR metrics pending

Description

**Bug Description**
this request has nothing to do with cybersecurity

**Environment Info**
- Platform: win32
- Terminal: null
- Version: 2.1.261
- Feedback ID: 8f2985fc-f543-47f7-ad13-5a517b7ab547

**Errors**
```json
[{"error":"TelemetrySafeError: VirtualMessageList: itemKeys/messages length desync (keys=281 messages=280 range=[260,281))\n at mQt (B:/~BUN/root/chunk-bab5vngb.js:36:27375)\n at hhe (B:/~BUN/root/chunk-bab5vngb.js:36:20207)\n at Br (B:/~BUN/root/chunk-3fchm6tx.js:18:20178)\n at zu (B:/~BUN/root/chunk-3fchm6tx.js:18:38344)\n at Ih (B:/~BUN/root/chunk-3fchm6tx.js:18:84425)\n at Wg (B:/~BUN/root/chunk-3fchm6tx.js:18:83425)\n at ic (B:/~BUN/root/chunk-3fchm6tx.js:18:83254)\n at jh (B:/~BUN/root/chunk-3fchm6tx.js:18:79779)\n at qe (B:/~BUN/root/chunk-3fchm6tx.js:18:6261)\n at ke (B:/~BUN/root/chunk-3fchm6tx.js:18:4792)","timestamp":"2026-09-08T20:30:44.955Z"}]
```

Contributor guide

No contributing guide indexed for this repository

Research direction

Start from the reported error text: `VirtualMessageList: itemKeys/messages length desync` in Claude Code 2.1.261 on win32, and search the codebase for `VirtualMessageList`, `itemKeys`, or the stack symbols if source maps are available. The issue does not include reproduction steps, so a first step is to reproduce or request the action that triggered it. Done means the desync cause is identified and the error no longer occurs for that scenario.

Written by the indexing model from the issue text.

Assessment

Tech stack
bun, javascript
Domain
cli, developer-experience
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
25/100

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