Kik won't show a faded d for me?

This is a stupid question, but it really bothers me. I have an iphone (4s) and I use kik messenger daily. Whenever someone's offline or hasn't opened the app, kik shows a faded grey d. But for me, whenever I go offline, the d still remains solid. It's really annoying because I'm not on the app but it still shows that I'm, and my friends always think I'm ignoring them when really I'm offline. It bothers me because I have an iphone too but for some reason the d never turns gray for me even when I've closed to app. Any reasons why? Stupid question I know, but it was bothering me. It's done this with my past ipod too, it still never showed a faded d when I used an iPod touch. I use Wi-Fi for my internet connection.

I think it depends wether your phone is an iphone or not

Do you actually open up the multitask menu and close the app? It used it do it for me too until I started closing it