C:/Program Files/Git/model command does not show interactive picker on Windows (PowerShell 7)

Description

The /model slash command does not show an interactive picker/dropdown on Windows. Passing the model name as an argument works fine (e.g. /model sonnet), but typing /model alone with no argument produces no interactive selection UI.

Environment

• OS: Windows 11 Pro (10.0.22621)
• Shell: PowerShell 7
• Terminal: Windows Terminal
• Claude Code version: 2.1.87
• Node TTY detection: node -e "console.log(process.stdout.isTTY)" → true

Steps to Reproduce

1. Open Claude Code in PowerShell 7 on Windows Terminal
2. Type /model with no arguments
3. No interactive picker appears — the command does nothing visible

Expected Behavior

An interactive picker/dropdown should appear to select from available models.

Workaround

Passing the model name directly works:

/model sonnet
/model opus
/model haiku

Notes

Since process.stdout.isTTY returns true, basic TTY detection is not the issue. The picker library may be doing additional Windows-specific checks (e.g. arrow key sequence handling) that fail silently and skip rendering the interactive UI.