[BUG] Line-by-line Streaming mode disappeared ?

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?

Line-by-line streaming mode is an important function. With this mode, no need to await one-time output for all. Each section is presented progressively on the terminal. However, this does not work in the latest CLI v2.1.81.

Windows Terminal, Win11

What Should Happen?

Please could you enable the streaming mode - it is quite useful.

Error Messages/Logs

Steps to Reproduce

The streaming mode should be enabled automatically when presenting the output in the terminal interface.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.81

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_