[BUG] Claude-Code steals visual focus from user without consent

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?

decision popups and new content in the text scroll log window both steal the visual focus from the user's intent when the user is scrolling back through the text scroll log with the vertical elevator scroll bar.

What Should Happen?

append to window and decision popup should each wait until the user releases the scroll elevator button

Error Messages/Logs

Steps to Reproduce

create a log session of multiple turns;
run background tasks
grab the elevator button on the right with your mouse cursor/button and scroll back several pages while still holding the mouse button

wait for (new output in scroll window) or decision popup

both of those will rip the focus from the user controller elevator button and move the elevator button back to the bottom of the output

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.170 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_