April, 2017 - filed to remove conditions , did my biometrics around same period (Vermont)
February, 2018 - my case was transferred to my local office (Atlanta)
April 9, 2018 - Local office received my case
April 17, 2018 - Case approved (Case status check)
April 20, 2018 - got a mail confirming my approval and card is being produced. Allow 60 days for arrival of card.
So in short, I say its not necessarily a glitch nor is it an automatic request for interview.