Triple double medal falsely earned

[Gamebuster1990]

Triple double is broken:

The description clearly says “Earn double digit kills, assists, and headshots in an Arena match”

I got it in warzone here:

https://www.halowaypoint.com/en-us/games/halo-5-guardians/xbox-one/mode/warzone/matches/f12300b3-ec49-49c9-bac0-58625f599ee4/players/gamebuster1990?gameHistoryMatchIndex=0&gameHistoryGameModeFilter=Warzone

[WIKADAJA]

It is in warzone also, I have a few of them.