So for some odd reason when you get a tier-set piece from your vault that is from the pvp rewards, it doesn’t count the extra appearance you get from Obisidan Aspectral Achivement. This is particularly on my hunter who received his tier shoulders from the vault. I have tried re-logging in and out only to find it’s still unlearned even though I have the achievement and the appearance. The other sets from pve content and my elite show up but the base conquest gladiator set isn’t flagging the extra stylization despite me having the appearance.
I have tried buying the base pvp shoulder item from the vendor to think maybe something isn’t coded right with getting tier shoulders but it still doesn’t show up on my transmog. Seems a bit odd that it’s behaving this way, I was directed here by a GM from my ticket.