[BUG] On upgrading to the latest version my connection to VLLM no long progresses any request

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?

My Claude code auto upgraded to v2.1.42. Im using a 3rd Party connection to VLLM hosting a qwen3-coder-30b-awq-8bit model. This used to work great.

After the upgrade any request would be acknowledged, I could see a tool call in the VLLM log. But then nothing happens, it ends the request and noting is processed.

Switched back to stable v2.1.32, and everything works again.

What Should Happen?

The request should be processed and actioned.

Error Messages/Logs

No errors displayed

Steps to Reproduce

1. Run Claude with env vars to connect to vllm
2. Make any request
3. Request is acknowledged, but nothing happens
4. VLLM logs show a call

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.1.32

Claude Code Version

V2.1.42

Platform

Other

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_