[BUG] Code tab send button completely unresponsive on Windows 11

Preflight Checklist

• [x] 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?

The send button in the Code tab does nothing. Clicking the arrow,
pressing Enter, and Ctrl+Enter all fail silently. The input field
accepts text but nothing sends. Chat and Cowork tabs work fine.
Claude in terminal works fine. Only the Code tab GUI is broken.

What Should Happen?

Typing a message in the Code tab and pressing Enter, Ctrl+Enter,
or clicking the send arrow should submit the message and get a
response from Claude, the same way it works in the Chat tab and
in the terminal.

Error Messages/Logs

============================================
 CLAUDE CODE BUG REPORT
 Generated: 05/04/2026 14:13:25
============================================

--- OS INFO ---
Caption        : Microsoft Windows 11 Pro
Version        : 10.0.26200
OSArchitecture : 64-bit

--- WINDOWS BUILD ---
DisplayVersion : 25H2
CurrentBuild   : 26200

--- NODE.JS ---
v24.15.0

--- NPM ---
11.12.1

--- CLAUDE CODE CLI ---
2.1.126 (Claude Code)

--- CLAUDE CODE PATH ---
C:\Users\micha\AppData\Roaming\npm\claude
C:\Users\micha\AppData\Roaming\npm\claude.cmd

--- EXECUTION POLICY ---
Scope ExecutionPolicy
        ----- ---------------
MachinePolicy       Undefined
   UserPolicy       Undefined
      Process       Undefined
  CurrentUser    RemoteSigned
 LocalMachine       Undefined

--- ANTHROPIC_API_KEY SET ---
NO

--- WHAT WORKS / BROKEN ---
Works:  Chat tab
Works:  Cowork tab
Works:  claude in terminal
BROKEN: Code tab send button does nothing (Enter, Ctrl+Enter, click all fail)

--- RELATED GITHUB ISSUES ---
#47320  #46937  #33771

============================================
 END OF REPORT
============================================

Steps to Reproduce

1. Open Claude desktop app
2. Click the Code tab
3. Type any message in the input field
4. Press Enter, Ctrl+Enter, or click the send arrow
5. Nothing happens - no response, no loading indicator, no error

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.126 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Related issues: #47320, #46937, #33771

This is a fresh install on a laptop. Claude Code CLI was not
pre-installed. Installed Node.js v24.15.0 via winget, then
installed claude-code via npm. Authentication works (claude
command works in terminal). Only the desktop app Code tab GUI
is broken.

Windows 11 Pro 25H2 Build 26200
Claude Desktop: 1.5354.0 (9a9e3d)