M3 Response cycle often stopped abruptly with abnormal message

Tested using opencode, zed
Chat can be abruptly ended with weird output:

<img width="537" height="487" alt="Image" src="https://github.com/user-attachments/assets/e9b8fb9f-2e64-440a-b8bc-d59cc4e70062" />

<img width="688" height="478" alt="Image" src="https://github.com/user-attachments/assets/ef044668-a66d-4d81-97c9-fd2fd9e25311" />

Hope devs can fix this soon