Destroyed corpses do not trigger follow-up scenario events

I destroy corpses with "Lightning Warp" spell.

"Ogham's Legacy" Unique Strongbox - destruction of monster's corpse prevents it from reviving, happened consistently with 2 separate strongboxes.

"The Silent Cave" Unique Map - destruction of Pirasha's corpse prevents map from being completed. She dropped some loot, but map didn't count as completed.
She also didn't drop the atlas skillpoints book, but I dunno if she should have (probably should, as I was getting books in other unique maps upon completion).
I killed her empowered by 2/4 essenses, planning to do other 2 essenses after boss. But these 2 essensses remained uninteractable after boss died, maybe that's by design, not sure.

Act 1 and 3 bosses do get destroyed too, but at least scenario works there, so campaign is continuable. Looks weird tho, Geonor and the Hooded One and Doryani speak without bodies.

Seems act bosses had the same problem, but got hotfixed.
But new content remains susceptible to the bug.