[BUG] Extremely long time to first token

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.48
• Operating System: Ubuntu 22.04 (WSL)
• Terminal: VSCode

Bug Description

Time to first token is EXTREMELY long, typically between 5-7 minutes. Claude Code would have 0 tokens up/down and the timer would keep increasing.

Steps to Reproduce

1. open WSL and start Claude Code with claude
2. Ask a simple query, such as please explain how [insert file here] works.

Expected Behavior

Wait a few seconds, and the token counter changes. Ideally Claude also starts outputting text.

Actual Behavior

Waited 8 minutes before Claude Code token counter changed and it started outputting tokens for a response to a simple question.

Additional Context

<img width="416" height="118" alt="Image" src="https://github.com/user-attachments/assets/f8c762af-f2ff-4b88-a031-22a5976149bf" />
<img width="386" height="113" alt="Image" src="https://github.com/user-attachments/assets/9d745a56-0d04-4e65-bc13-966eccee06df" />