Korean IME composition not displayed inline - appears in separate popup

Environment

• OS: Windows 11
• Terminal: VS Code integrated terminal
• Claude Code version: 2.1.9

Symptoms

When typing Korean in Claude Code CLI, characters do not appear directly in the input field. Instead, an IME composition window appears in the bottom-right corner (or a separate location). Characters only appear in the input field after they are fully composed, making it impossible to see what is being typed in real-time.

Steps to Reproduce

1. Launch Claude Code CLI
2. Attempt to type any Korean sentence
3. Observe that composing characters appear in a separate popup instead of inline

Notes

• Korean input works correctly in VS Code terminal itself
• This issue only occurs after entering Claude Code
• Other CJK (Chinese, Japanese) users may experience the same issue

Additional Feedback

Considering that Korean consumers have a cultural preference for speed and responsiveness, this sluggishness is likely to feel significantly more frustrating to them compared to users from other countries. Fixing this issue would particularly appeal to Korean users.