After purchasing and using the Energy Thrusters, the achievement does not track the Energy Thrusters as attained. They have been. They are actively on the vehicle in my Rostrum configuration as we speak.
Same issue I literally have them on my mount and it’s not completing the achievement, at first I thought it just wasn’t on the vendor but after your post I went to see if I had already purchased and I had.
Same issue here too. GM told me to come here to report. Please help.