It's likely a minor thing on their list that they aren't spending the time to focus on as RS5 is their priority. If I were you guys, I would contact Gandalf directly and see if he knows the reason behind it, and if he can fix it if it doesn't cause any problems. He has a very good understanding of the scripts themselves, and he isn't coding RS5 directly, so he could make the final decision on this problem as a higher priority than the Devs probably could right now.