It is deleted.
This is as deleted as things ever get on Stack Exchange. Even "obscene racist diatribe crap" only gets deleted to this degree, though content flagged as spam or offensive is hidden behind a content warning, not merely greyed out. The only other deletion option is removing it entirely from the database and we don't do that unless it's absolutely necessary. I don't have a count but I'd guess that the total number of posts removed from the database is extremely small, possibly in the single digits... possibly three or fewer.
I'm not sure why this bug happened and if it occurs again, please post a bug report so that we can look into it but hard deleting the extra post isn't a solution to it. Even clearing the content isn't necessary. The post existing isn't going to harm you in any way and there's only 16 people on the site who can see it as of right now.