Windows app composer freezes about 2s on alphabetic input; numeric input is instant

Environment

• Codex Windows app: 26.609.3341.0
• Codex CLI: 0.133.0
• OS: Microsoft Windows NT 10.0.26200.0
• PowerShell: 7.6.2

Summary

In the Codex Windows app, starting a new conversation and focusing the composer causes a consistent freeze of about 2 seconds when typing alphabetic input. Numeric-only input is accepted immediately with no visible lag.

Reproduction steps

1. Open the Codex Windows app.
2. Start a new conversation.
3. Click/focus the message composer.
4. Type alphabetic characters such as abcabcabc.
5. Observe that the UI/input freezes for about 2 seconds before typing is accepted.
6. Repeat with numeric-only input such as 123456789.
7. Observe that numeric-only input has no lag.

Notes

• Reproduces even in an empty/no-project new conversation.
• Reproduces when typing English letters as well.
• Numeric-only input does not reproduce the freeze.
• Local project scanning seems unlikely because it also happens without a project.
• Windows Defender, OneDrive, and indexing of newly created directories are not active factors in this environment.

Expected behavior

Alphabetic input in the composer should be accepted immediately, with the same responsiveness as numeric input.

Actual behavior

Alphabetic input causes an approximately 2-second freeze before input appears or can continue.