A Real Challenger Mission

So I already finished the world missions we got so far and got the "new" one, "A Real Challenger Mission: Complete 4 more world missions". What I don't understand is why it says I already have completed one. Why one? Either it should be 0, because it says "...4 more..." or it should be two, as I already completed two (except the "Complete 2 World Missions" ofc). A friend of mine said, his progress shows 2/4 completed missions... I'm confused... Is it a bug or did I do it in a wrong or rather not in the best possible order? Which would be strange because as far as I see it you only get the mission as soon as you completed all the others... or not? Just asking ^^'

Screenshots: My progress: https://prnt.sc/goqo3i her progress: https://prnt.sc/goqodn