[BUG] VS Code doesn't save chat history when using Claude Opus 4.6

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?

VS Code doesn't save chat history when using Claude Opus 4.6

What Should Happen?

My chats should be saved in chat history.

Error Messages/Logs

Steps to Reproduce

Chat with claude, do another chat, the first chat isn't saved

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Opus 4.6

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_