Empty initiatorOrigin in Redirect SSO extension authorization options on macOS 27

We are developing a macOS Redirect SSO extension and observing an empty initiatorOrigin in the authorization options received in beginAuthorization(with:).

The corresponding AppSSOAgent log shows:

localhost AppSSOAgent[55733]:
(AppSSOUI) [com.apple.AppSSO:SOAgent]
-[SOAgent beginAuthorizationWithRequestParameters:completion:] {
    AuthorizationOptions = {
        initiatingAction = 0;
        initiatorOrigin = "";
        path = "";
        userActionInitiated = 1;
    };

Is this expected behavior for certain SSO requests, or could this indicate an issue in macOS 27?