NullPointerException on "Post events" from a subscribed method

[daj]

The Otto icon works fine to jump from a posted event back to its subscribed method, e.g. touching the Otto icon here

bus.post(new AuthenticationEvent.LogoutRequest());

jumps to this method fine

@Subscribe

public void logout(AuthenticationEvent.LogoutRequest event) {

    // My code, blah blah blah
}


However, when I press the Otto icon for the @Subscribe method, then choose "Post events", it shows "No usages found in Project or Libraries", and the Event log shows "NullPointerException: null", and I see an IDE error.

I'm using a pretty recent version of Android Studio: