Store sorting summoner icons by IP not working [CLIENT]

Despite there being an option to sort summoner icons by IP price in the store, it doesn't actually work. This is true whether you sort by price in ascending or descending order. Right now there is a summoner icon available for IP purchase (the Love Dove icon) and I wanted to find it quickly, so I tried doing this thinking that the icon would end up at the top or bottom of the list, but no dice. It is still in the middle of the available options. Trying to sort by date does work.