Despoiler of Souls - new bug

Woundsealer
Woundsealer Posts: 16
Despoiler of Souls was on the battlefield.
I had 3 fully charged cards with more than enough mana in hand.
Despoiler was destroyed by matching of a Grave Mist gem.
Despoiler did NOT return to the battlefield.

I was unable to test whether Despoiler being returned would count towards event goals of summoning 2 horrors as there are also other bugs when trying to summon zombies with "spell" cards, or as effects on other cards that summon zombie tokens.