Peaceful Atom achievement not working

Hi, I think the “Peaceful atom” achievement may be broken.
I just shot down a nuclear weapon carrier:

It was near the end of the game but it did count it as a kill:
image

Yet I did not get the award/achievement:
image

Is this a bug or am I missing something?

It maybe be a different kind of achievement, the ones u can check in ur stat card. Not sure tho.