On iPad/latest release, in the third mission of the third scenario (I forget the name, but it’s at the manor, with the Haunts)
My wizard is at the Academy so keeps drawing spells, and a couple of them were haste. Call haste to explore and the next card is dilettante. The augmented spellbook buttons then appear and of course I then draw a card and then.... nothing. Dilettante is still there but the buttons to acquire him or roll dice are not. So I can’t do anything at all, but exit and reload the game....
