Wrong authenticatorAttachment after browser->startRegistration() with YubiKey

[kareha]

Describe the issue

The result after a successful startRegistration() with a usb security key (Yubi key) is not correct.

authenticatorAttachment in this case is "platform" and I expect it to be "cross-platform"

response.transports includes "usb" (as the only value here)

Reproduction Steps

1. Register a new Security Key
2. See result. authenticatorAttachment

Expected behavior

authenticatorAttachment suppose to be "cross-platform"

Code Samples + WebAuthn Options and Responses

See docs

Dependencies

• OS: macOS 14.5
• Browser: Safari 17.5
• Authenticator: YubiKey 5C Nano

SimpleWebAuthn Libraries

├── @simplewebauthn/[email protected]
├── @simplewebauthn/[email protected]

Additional context