Sometimes it seems that the rogues arrows stop working. This appears to happen after you run out of arrows, even if you then refill. I've walked into a room with 40 arrows and nothing happens
Yes, a refresh would fix it, but otherwise nothing would. It seems like the game believed you had no arrows, even though arrows were indicated on screen. I first thought it had to do with the magical orb that maxed arrows, but it happened later with normal arrow increases.