Qwen 3.6 27B in Claude Code says it will do something then stops and prompts for user reply (not failing a tool call)

I'm running Qwen/Qwen3.6-27B-FP8 via vLLM using this command: vllm serve Qwen/Qwen3.6-27B-FP8 --tensor-parallel-size 4 --gpu-memory-utilization 0.95 --max-num-seqs 8 \ --enable-auto-tool-choice --tool-call-parser qwen3_xml \ --enable-prefix-caching --attention-backend flashinfer

It works pretty well in Claude Code, except fairly often it will announce its about to do something, then just stops and waits for a user response. E.g.:

``` Let me continue with the remaining edits.

✻ Brewed for 48s

```

(waiting for user input)

No error message, no failed tool call as far as I can tell, it just fails to follow through. Sometimes it will do it several times in a row and even comment "The user replied 'continue' - they want me to continue. Let me continue with the remaining edits." (user prompt waiting for me to reply)

Is this just a deficiency in the model's thinking, an incompatibility between Claude Code's prompts and the model, or an error in the configuration?

I haven't seen this happen in OpenCode, but there are reasons I prefer CC for some tasks.

Thanks.