[BUG] Experiencing this same issue on Windows 11.

Preflight Checklist

• [ ] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Environment

• OS: Windows 11
• Affected Claude Code versions: 2.1.31, 2.1.32, 2.1.33, 2.1.34
• Working version: 2.1.25 (no freeze, but limited to Opus 4.5)
• Affected editors: Cursor, Windsurf, Antigravity (all VS Code-based integrated terminals)
• Not affected: Windows Terminal (works perfectly on all versions including 2.1.34)
• Subscription: Max (paying for Opus 4.6 access but can't use it)

## Steps to Reproduce

1. Open any VS Code-based editor (Cursor, Windsurf, or Antigravity)
2. Open the integrated terminal
3. Run claude
4. Claude Code UI loads normally — banner, model info, etc. all display
5. Input is completely frozen — cannot type, cursor doesn't respond
6. Ctrl+C does not work. Only way out is to kill the terminal

## What I've Tried

• Reinstalling Claude Code — no fix
• Clearing cache/config — no fix
• Pressing Enter immediately after launch — inconsistent results
• Different VS Code-based editors (Cursor, Windsurf, Antigravity) — all freeze
• Windows Terminal — works perfectly, confirming this is specific to VS Code integrated terminals
• Downgrading to 2.1.25 — works, but loses Opus 4.6 access

## Key Observation
This is not a general Windows issue. It is specifically a VS Code integrated terminal issue. The same machine,
same user, same config runs Claude Code flawlessly in Windows Terminal. The regression started exactly at version
2.1.31 — version 2.1.25 has zero issues.

## Impact
I'm forced to use 2.1.25 (which only offers Opus 4.5)
because every version from 2.1.31 onward is unusable in my editor's terminal. This effectively locks me out of a
feature I'm paying for.

A fix or even just a confirmed workaround would be greatly appreciated.

What Should Happen?

Claude Code should load in VS Code-based integrated terminals (Cursor, Windsurf, Antigravity) and accept keyboard
input normally, just like it does in Windows Terminal.

Error Messages/Logs

No error messages are displayed. The UI loads completely (banner, model info, etc.) but the input is silently frozen.
  No crash, no error output. Ctrl+C does not respond. The terminal must be force-killed.

Steps to Reproduce

Steps to Reproduce

1. Install Claude Code version 2.1.31 or later on Windows 11
2. Open any VS Code-based editor (Cursor, Windsurf, or Antigravity)
3. Open the integrated terminal (Ctrl+`)
4. Run: claude
5. Wait for the Claude Code UI to fully load
6. Try to type anything — input is completely frozen, cursor does not respond
7. Try Ctrl+C — does not work
8. For comparison, open Windows Terminal and run: claude
9. Claude Code works perfectly in Windows Terminal with the same version

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.25 — no freeze, input works perfectly in all terminals including VS Code integrated terminals. The regression started at 2.1.31.

Claude Code Version

2.1.25

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Cursor

Additional Information

_No response_