Input box completely unresponsive when Claude is idle (Windows 11 / PowerShell)

Description

The text input becomes completely unresponsive while Claude is visibly idle (no spinner, no active tool calls). Keypresses are silently ignored — nothing appears in the input box.

Steps to Reproduce

1. Run claude in a PowerShell terminal on Windows 11
2. Have a normal conversation / complete one or more turns
3. At some point while Claude is idle and awaiting input, the input box stops accepting keystrokes

Expected Behavior

Input should always be accepted when Claude is idle and awaiting a prompt.

Actual Behavior

• Claude appears idle (no spinner, no visible activity)
• Typing produces no characters in the input box
• Pressing Escape does not help
• Clicking directly in the terminal input area does not help
• Alt+Tab away and back does not help
• The only recovery is fully closing and reopening Claude Code

Workaround

Press Ctrl+C twice to exit, then relaunch with claude.

Environment

• OS: Windows 11 Home (10.0.26200)
• Shell: PowerShell (pwsh)
• Terminal: Windows Terminal
• Frequency: Occurred twice in a single session
• No custom hooks configured in settings.json

Additional Notes

No hooks are configured that could block input. Issue appears to be an application-level freeze of the readline/input interface rather than a Windows focus problem.