Line rendering issues with terminal width in Claude Code 2.1.23

Description

Claude Code is displaying rendering issues with lines, appearing as if it doesn't properly handle the terminal width.

Environment

• Claude Code Version: 2.1.23
• OS: macOS Darwin 25.2.0
• Terminal Emulator: Apple Terminal (Terminal.app)
• Terminal Dimensions: 80 columns × 24 lines
• TERM: xterm-256color

Additional Context

System shows warning about CPU lacking AVX support with Bun runtime.

Expected Behavior

Text should wrap properly and render cleanly within the terminal width.

Actual Behavior

Lines are "all messed up" and don't display correctly relative to the terminal width.

Steps to Reproduce

1. Open Apple Terminal on macOS
2. Run Claude Code
3. Observe line rendering issues