Bug since last extension went on and while playing direct match with Sparky. If you're playing a deck including "Brideciel allègre" (in french) Sparky is unable to play instants that would involve a mana cost adjustment and the game freezes. All we can do to resolve this is to leave the game.
Lu Inverse#01125 commented
Sparky is freezing on any deck I play about half the time. Most of the Decks I'm playing are Direct Game decks, but I've also run into the issue when trying out the premade decks.
I've had this happened with other cards where Sparky just freezes and either he resigns or I have to quit for the game to stop.
Envious Spartan#21907 commented
Still does it and it’s annoying. Not just that, her consistent “Hmm”s too. Their programmers really need to work on her.