Notifications not working for one of my favorite friends

I've had the same issue but my friend told me it is probably just a bug in the beta preview

Hello there fellow gamer,

We understand that you're experiencing an issue concerning the lack of notifications for when one of your friends signs into Xbox Live.

Considering that you're both part of the Xbox Insider Program, this may very well be due to an update made for the Xbox One console.

Our suggestion, report this problem through the Xbox Insider Hub so that this is acknowledged and taken care
of.

Best wishes!

I wasn't getting notifications for when I had it set to favorites only, changed it to all friends and that worked for a day and now not getting notifications for anything, friends, achievements etc.

Reaper, I still strongly recommend checking the console version in Settings -> System -> Console info, as there have been reports of individuals with issues receiving friend notifications, even though they ARE on the correct version. (For example, the friend
notifications supposedly default to "Favorites" instead of ALL friends, so if you haven't marked any friends as favorites, you won't receive any notifications, and it will appear not to be working.)

I have an issue with the notifications as well. Well one notification, with one friend. I have one person on my friends list, who is a favorite and it will never pop up when he signs on. Every other notification works fine, and my brother, who has an
xbox one in his room is alerted when the same friend comes online. To my friends knowledge he did not change any settings, neither did I. Weird issue, doesn't really effect my experience, just thought it to be really strange. If there is a simple fix
I'd take it, if not that's fine too.