[BUG] Ghost text / screen artifact remains after typing /exit in Claude Code REPL

What's Wrong?
After typing /exit in the Claude Code REPL, the terminal screen shows ghost text / display artifacts. The slash command autocomplete menu and other UI elements remain visible on screen after the process exits, making the terminal appear garbled.

What Should Happen?
The terminal screen should be cleanly cleared after exiting Claude Code, with no residual UI elements or ghost text remaining.

Steps to Reproduce

1. Open Claude Code v2.1.90 in Windows Terminal
2. Type /exit at the prompt
3. Observe that ghost text from the REPL UI (autocomplete menu, decorative borders) remains visible in the terminal after exit

Environment

• Claude Code version: 2.1.90
• OS: Windows 10 Pro (Build 19045)
• Terminal: Windows Terminal 1.23.20211.0
• Platform: Anthropic Max