Soft lock in Trial of the Planes Black match

After playing Behold the Beyond, the last card played was Tamyo's Journal. The hand was empty and the game became locked. The battle log could still be opened (last entry: Tamyo's Journal was cast) and the chat could also be opened. Such a bug is completely unacceptable in any match, but even more so in an event with a hefty entry fee like TotP.