I had this bug two times already. First, when Lem encountered Zombie Horde; second, when Ezren encountered Skinsaw ritual. Both times there were multiple heros involved in those encounters. After everyone had their battle it was time for Lem/Ezren to recharge their spells. After recharging I received the gold for success. But there was no "button" to end my turn either in the right top corner or right middle.

So far, it only occured when the hero, who first encountered the barrier played and recharged a spell AND there were other heroes who had to encounter it.

These happened during different scenarios and even different parties.

Screen would be nice but check out that you were trying to activate the active player. Also it may be Nessesary to drag the reshargeable card the the deck.