After dying twice in a game, with character “Harceaparcea”, I quit that game and made a new game. The item “Buriza-Do Kyanon” was not on the corpse in the new game. The incident happened on 25.10.2020 around 11:45 PM ST.
Depending on the circumstances on how you left the game you could have lost it by design.
Though if not, then join the club of so many others who have just lost an item due to a bug/issue with the game.
Blizzard will not take any responsibility for it… so play knowing you can lose anything/everything at any moment… or don’t and wait for it to be fixed.