Has anyone else had this happen? I'm in Mission 1 and the number Runes in my Powers Inventory stopped going up. I had two Runes and then I found at least two more but it still says I have just two Runes. I know I didn't spend them on a power because I've been saving up for something specific. Is this a known bug? Does it just keep the real number of runes a secret until later in the game?