authenticate right never get called in 10.13

We developed an authorization plugin with our custom UI. It worked perfectly on El Capitan and Sierra.

But on High Sierra it stopped invoking when a user clicks the lock item in System.Preferences.

To invoke our plugin, we changed the authenticate right in the authorization database.

  { 'class' : 'evaluate-mechanisms', 'mechanisms' : [ 'builtin:authenticate', 'builtin:reset-password,privileged', 'builtin:authenticate,privileged', 'PKINITMechanism:auth,privileged' ], 'shared' : 'true', 'tries' : '10000' }

Actually, we replaced builtin:authenticate with a mechanism from our plugin. We found that the authenticate right is not invoked on High Sierra, when a user clicks any locks in System.preferences.

Is that a bugs? Are there any other ways to invoke a custom UI mechanism for unlocking?