Warlord Achievement will not unlock

As my service record will play out, I have a win on every single Warzone map the game has to offer and the achievement is stuck at 0%/won’t unlock. Is there something wrong here? The achievement might be bugged or something.

https://www.halowaypoint.com/en-us/games/halo-5-guardians/xbox-one/service-records/warzone/players/zero%20s%20serenity