Very simply, I used a Mending spell to trade in one item from my inventory for another, when I click on the item I want to take back from my Discard pile there is no button to press to do so, nor can I drag the card to my hand or deck. As for some of the details:
Character - Harsk
Spell in question - Mending
Discarded... - Potion of Hiding
...to get - Spyglass
Scenario - Local Heroes
Location - Sandpoint Cathedral
I also can not close out of the menu, take back my action, or bring up the games main menu. I'm also playing this on Steam, if that helps.
