chat:stash (Ctrl+S) stops working after returning from chat:externalEditor (Ctrl+G)

Description

After using Ctrl+G (chat:externalEditor) to open VS Code, closing the editor tab, and returning to Claude Code, Ctrl+S (chat:stash) no longer responds. The stash keybinding is effectively dead until the session is restarted.

Steps to reproduce

1. Start Claude Code, type some text in the input
2. Press Ctrl+S — stash works fine
3. Type new text, press Ctrl+G — external editor (VS Code) opens
4. Edit/close the VS Code tab, return to Claude Code
5. Type text, press Ctrl+S — nothing happens

Expected behavior

Ctrl+S should continue to work after returning from the external editor.

Environment

• Claude Code v2.1.86
• Windows 11 Pro (10.0.26200)
• Shell: Git Bash (MINGW64)
• EDITOR: code --wait
• Custom keybindings: none (empty bindings array)