[BUG] IDE integration broken in v2.0.45 on Linux (works on macOS, works in v2.0.36) - GoLand

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?

IDE integration completely broken in version 2.0.45 on Linux only. The same version (2.0.45) works correctly on macOS with the same IDE
and plugin.

Symptoms on Linux:

• /status shows: IDE: Installed PyCharm plugin but connection is not established
• /ide command correctly detects IDE: Goland
• Port is listening correctly: [::ffff:127.0.0.1]:46067 (confirmed via netstat)
• Environment variables set correctly: CLAUDE_CODE_SSE_PORT=46067, ENABLE_IDE_INTEGRATION=true
• Integration features don't work (file opening, highlighting, etc.)

What works:

• ✅ macOS: v2.0.45 works fine
• ✅ Linux: v2.0.36 works fine
• ❌ Linux: v2.0.45 broken

What Should Happen?

Connection should be established (as it does on macOS and as it did in v2.0.36 on Linux)

Error Messages/Logs

Steps to Reproduce

1. Install Claude Code v2.0.45 on Linux
2. Install JetBrains plugin in GoLand
3. Restart GoLand multiple times
4. Run claude from GoLand's integrated terminal
5. Check /status and /ide

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.0.36

Claude Code Version

2.0.45

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

Environment:

• Claude Code version: 2.0.45 (broken on Linux), 2.0.36 (works on Linux)
• IDE: GoLand 2025.2.4 JetBrains plugin Claude Code[Beta] - 0.1.12-beta
• OS: Linux (Arch, kernel 6.17.8) ← Bug is Linux-specific
• Note: Same versions work perfectly on macOS