[BUG] [Windows ARM64] Bun crash (incorrect alignment) + performance regression in v2.1.47

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?

Environment:

OS: Windows 11 ARM64
Extension version: 2.1.47 (regression from ~2.1.45/46)
VS Code extension: anthropic.claude-code-2.1.47-win32-arm64
Issue:
Since updating to v2.1.47, the extension is noticeably slower and less responsive. Frequent process crashes with exit code 3.

Crash details from log:

Bun v1.3.10 (1423d3c8) Windows arm64
panic(thread 36016): incorrect alignment
RSS: 0.46GB | Peak: 0.51GB | Commit: 0.69GB
Process exited with code 3
Bun crash report: https://bun.report/1.3.10/W_11423d3cmgEugogCwmzrfwl0uiBgyvBw32CwmvBo7xB44wCwvhgmCw236lC4i16lCg6xjkBgsjufCYKERNEL32.DLLg0jCCSntdll.dlloqi1BA0eNrLzEvOLypKTS5RSMzJTM/LTc0rAQBMcwep

Expected: Performance and stability equivalent to v2.1.45/46

What Should Happen?

Performance and stability equivalent to v2.1.45/46 - no code 3 errors.

Error Messages/Logs

Crash details from log:


Bun v1.3.10 (1423d3c8) Windows arm64
panic(thread 36016): incorrect alignment
RSS: 0.46GB | Peak: 0.51GB | Commit: 0.69GB
Process exited with code 3

Steps to Reproduce

Open Folder in VS Code. Go to Claude Code Extension. Error happens randomly.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.1.45

Claude Code Version

v2.1.47

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

This error just happens even if I'm not performing any actions. It appears to slow down each chat window / or even keeps them looping. Incredibly frustrating.