bug: Unexpected role after cancelling bash use when using Mistral Small 4

[MalcolmMielle]

Component

CLI

Summary

I am using a local Mistral Small 4 model running with llvm on a DGX spark.

If I cancel the use of a tool, for example a bash script, I have a "Unexpected role 'user' after role 'tool'" error. This is copy of an example output.

Run the unit test using the .venv virtual environment and unittest
bash: skipped
Skipped: User cancelled the operation.
Run the unit test using the .venv virtual environment and unittest
Error: API error from spark (model: mistralai/Mistral-Small-4-119B-2603-NVFP4): LLM backend error [spark]
  status: 400 Bad Request
  reason: Bad Request
  request_id: N/A
  endpoint: http://spark-5500.local:8000/v1/chat/completions
  model: mistralai/Mistral-Small-4-119B-2603-NVFP4
  provider_message: Unexpected role 'user' after role 'tool'
  body_excerpt: {"error":{"message":"Unexpected role 'user' after role 'tool'","type":"BadRequestError","param":null,"code":400}}
  payload_summary: {"model":"mistralai/Mistral-Small-4-119B-2603-NVFP4","message_count":5,"approx_chars":26815,"temperature":0.2,"has_tools":true,"tool_choice":"auto"}

Reproduction steps

1. Add a local Mistral Small 4 model
2. Ask to run any bash command
3. Instead of approving say "No and say what to do..."
4. Relaunch the same command
5. See the crash

Versions / environment

vide 2.7.3 uv 0.11.1 Ubuntu 24.05

Logs & screenshots

[MalcolmMielle]

Update this does not seem to happen to me on opencode