Larian Studios Forums Divinity II The Dragon Knight Saga / Flames of Vengeance (English) Help/Tips/Tricks Key to Erlking's minichest in secret room missing?

FOUND .... it was in a loot bag stuck in the wall of the secret room left side ... located by the sparkles in the wall ... only clickable from one side.

Can't find key to minichest in Erlking's secret room. Have cleared all floors and searched the floor above including the secret room where it is supposed to be? Is there a known bug ? Thanks