Dynamic Queue Diversity

Hey I wanted to report an issue for you guys. A few friends and I were queuing up for ranked in dynamic queue, and our roles were as follows:

Bot-Support Support-Bot Jungle-Fill

Our last position (Jungle-Fill) had to swap to Jungle-Top because when he had fill selected it said we didn't have enough diversity in roles, then after switching to top as secondary, we were ok.. Just wanted to let you know, so you could fix it.