Halo 5 rooster not working properly?

So i have 3 friends online on the xbox right now. But the ingame rooster is only showing one.
It’s happened several times before.

Do my friends need to be on Halo 5 to show up on the rooster or is the rooster “broken” ?
If i recall right this happened even if all my friends were on Halo 5 but not 100% sure.