[BUG] No way to seek/jump in long scrollback — native terminal scrollbar lost, in-app scroll painfully slow (macOS Terminal, Konsole over RDP)

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?

Claude Code v2.1.186.

Since Claude enables terminal mouse tracking, the terminal's native scrollbar no longer controls the conversation buffer — so the one fast way to seek to an arbitrary point in a long session (grab + drag the scrollbar) is gone. What's left is painfully slow:

• Mouse wheel scrolls only a few lines per tick — seeking back through a long history takes ages.
• There is no in-app scrollbar / no jump-to-position.
• Shift+PageUp/PageDown page the now 1-page terminal, not a way to seek through Claude's history.

Reproduces without CLAUDE_CODE_NO_FLICKER, on multiple platforms (so it's broader than the closed #42725):

• macOS Terminal (Terminal.app)
• KDE Konsole 25.08.01 / Ubuntu 25.10, over RDP via Microsoft "Windows App"

Request (any one would solve it):

1. Restore native terminal scrollbar by adding a persistable "enableMouseTracking": false setting, OR
2. Provide an in-app draggable scrollbar / jump-to-position, OR
3. Make wheel scroll faster (larger lines-per-tick) and add a "seek to top/bottom/percentage" key (or a velocity).

Related: #42725 (closed, Windows/NO_FLICKER), #66601, #65833.

What Should Happen?

Claude should allow fast history seeking

Error Messages/Logs

Steps to Reproduce

1. Open Claude
2. Do multiple page of work
3. try to go back to the first model answer quickly

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.186

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_