Terminal screen jumps/scrolls back on tool output

Description

When Claude Code runs tool calls (Bash, Read, Edit, etc.), the terminal screen jumps/scrolls back to a previous position. This happens consistently across multiple concurrent sessions on Windows 11.

Steps to reproduce

1. Open a Claude Code session in Windows Terminal
2. Have a conversation with several tool calls
3. Observe the screen jumping/scrolling back when tool output returns

Environment

• Claude Code version: 2.1.76
• OS: Windows 11 Pro 10.0.26200
• Terminal: Windows Terminal
• Shell: Git Bash
• Hardware: AMD Ryzen 9 9950X, 128GB RAM (not a resource issue)

Impact

This makes it very difficult to work with Claude Code, especially when running multiple sessions. The screen constantly jumps around and backs up, interrupting workflow and making it hard to follow output.

Expected behaviour

Terminal should stay at the current scroll position when tool output is rendered. The screen should not jump or scroll back to previous output.