delve haunted remain stuck

hi, i try to farm delve but i get stuck everytime i have to face the event "haunted remain", i clic grave, mobs spawn, i kill all of them and make sure there is nothing that stay alive but no matter what i do the event stay active, i can't open loot or clic the cart to continue, have to relog to leave delve. it happen everytime i face this event

Same thing happening to me.

Same for me tried multiple Haunted remains and the event never closes itself and you can't complete that node