[BUG] Lag during text entry in Windows Terminal

Environment

• Platform (select one):
• [X] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.98
• Operating System: Windows 11, WSL2 2.5.10.0, Kernel 6.6.87.2-1
• Terminal: Windows Terminal

Bug Description

When using Windows Terminal without an IDE connected to Claude Code, approximate every 2 seconds there is a 'stop the world' event where text entry pauses for approximately half a second.

If you open VS Code, then run Claude via Windows Terminal and connect to the VS Code IDE, this issue disappears.

Steps to Reproduce

1. Open Windows Terminal without VS Code running, and press and hold a key.

Expected Behavior

The flow of text entry is consistent

Actual Behavior

The flow of text entry is interrupted approximately every 2 seconds for approximately 0.5 seconds