Codex Desktop App slash command popup renders incorrectly when typing "/"

Environment

• Codex Desktop App: 26.519.22136
• Build: 3003
• Bundle ID: com.openai.codex
• macOS: 15.7.5 (24G624)
• UI language: Chinese

Steps to reproduce

1. Open Codex Desktop App.
2. Focus the message input box.
3. Type /.

Actual behavior

The slash command popup renders incorrectly:

• Shows "无命令" / no command.
• Displays oversized empty white rounded panels.
• The popup overlaps with the input area.
• A dark clipped artifact appears on the right side of the popup.
• The UI looks broken and slash command discovery is unusable.

Expected behavior

Typing / should show a normal slash command menu with available commands, correct sizing, no overlapping panels, and no clipped visual artifacts.

Notes

This appears specific to the Codex Desktop App slash command menu. A screenshot is available from the original report and can be attached if needed.