[BUG] Claude Code crashes with exit code 3 on Windows ARM64 Environment

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?

Claude Code crashes with exit code 3 on Windows ARM64
Environment:

Windows 11 ARM64
VS Code with Claude Code extension v2.1.49
Bun v1.3.10 (bundled with Claude Code)

What happens:
Claude Code runs for a period of time then crashes with a Bun runtime panic: "incorrect alignment" on thread 5508. The process exits with code 3.
Crash details from logs:

Runtime: Bun v1.3.10 (1423d3c8) Windows arm64
Error: panic (thread 5508): incorrect alignment
Memory at crash: RSS 0.65GB, Peak 0.85GB, Commit 1.00GB

What Should Happen?

x

Error Messages/Logs

x

Steps to Reproduce

x

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

x

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_