BUG: Apex Legend achievement in Steam not working properly

For the Steam achievement "Apex Legend", it says to win a game as eight different characters. I did so in Arena mode, and I have not unlocked the achievement. Why have I not unlocked the achievement? It does not specify which mode, and winning in Arena mode counts for the Apex Offense, Apex Defense, Apex Support, and Apex Recon achievements in Steam. I would really appreciate the help in unlocking this achievement since it does not specify and I feel like it should count. My username is Puarai.