Friends List - Offline Friends Seen as Online

I have my friends list separated into three groups. In the first group, I have 9 people, 3 of which are also in my club. When i open the club and right click on one of their names, my friends list then shows that they are online and available, even though they aren't

Steps to reproduce:

1. Create a new group in friends list
2. Add players to both the group and the club
3. Right click a name in the club, that is also in the top group of friends list
4. Watch for them to appear online in friends list