I have a link to the game saved in HSreplay. Feel free to PM me CM’s since the forum apparently won’t let me post a link to the game.
In this game you will see my opponent plays Blowtorch Saboteur on turn 4, which correctly made my hero power cost two more. However, my hero power became hard stuck on costing 3 for the remainder of the game, even through turn 7, 3 turns after the card was played. I even used the hero power to demonstrate the bugged cost.