You don't need to drag anything. Just click on the objects. If you are in the city - hover over the object, click - move to the object. Dialogs are clicked anywhere on the screen by clicking on them. Mini-games are mostly intuitive and some of them have instructions.
Viewing post in Knightly Passions [1.21 version] 18+ comments
I’m having a similar problem, although I’m playing on a Steam Deck in Linux. None of my inputs seem to do anything in the symbol drawing mini-game, the one during quest 14. I’ve tried tapping and clicking on the directional symbols. I’ve also tried using all of the Deck’s directional inputs, thinking one of them might mimic arrow keys, but nothing works.