Scrolling during streaming output jumps to top of session

[ShiraJoseph]

Description

When Claude is streaming output (adding lines to the chat), scrolling with the mouse wheel causes the terminal to jump to the very top of the session instead of scrolling normally.

Steps to reproduce

1. Start a conversation with some history (enough to scroll)
2. Ask Claude something that produces a long response
3. While the response is streaming, touch the scroll wheel on your mouse

Expected behavior

Terminal should scroll relative to current position (up or down depending on scroll direction).

Actual behavior

Terminal jumps to the very beginning of the session (top).

Environment

• Windows 11 Pro 10.0.26200
• Started happening after the latest Claude Code update

[github-actions]

Found 3 possible duplicate issues:

1. [Bug] Mouse wheel scroll jumps to top on Windows Terminal #34903
2. Chat scrolls to top when Claude sends a message while user is scrolled mid-conversation #34673
3. Terminal scrolls to top on every new output in certain sessions #34503

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🤖 Generated with Claude Code

[timrutter]

this happens for me. using iTerm on mac, claude version 2.1.79.
it only happens when claude is producing output. I scroll up a bit and as soon as it next outputs something, it jumps to the very start of the text. Means you have to wait till its finished before you can read anything

[pohlipit23]

same for me

[slamadingdong]

Same, windows 11 wsl, Version: 2.1.76 . Very annoying, adds lots of friction