Bug with Filters?

[Guest metalgearal]

I've got 3 filters in my list that are Friends, Uni and Home. Everyone who is a friend is put under Friends, and then into one of those two categories as well (there are others but I'll keep it simple with 2) - So basically I can choose filter Friends to see both Uni + Home people or I can select one of those to just see that subset.

It doesn't seem to work though, if I select Uni or Home I see those friends fine, but if I select Friends it only shows the Uni people, not the Home ones as well. I've double checked and they are all in the Friends category.

Is this a recognised bug? Any fixes?