Friends keep popping up

This sometimes happens to me too but its not happenening all the time so my guess is its a glitch. I guess you could try changing the friendship then change it back to see if that helps.

Try going to the notifications tab under your settings and resetting them or changing how the notification comes in. You can choose to not show that banner to remedy that.

Check your notification settings and readjust them to the way you want them to be displayed. Change them around a couple of times, then to your preferred notification settings to get them to sync again.

Mine does this as well, I think it's just a Minor hiccup within the system.

I have the same problem though I just deal with it. I do not have as many friends like you so I do not receive as many notifications.