Clan member challenges button not working properly?

*Also posted in Help forum as unsure which one is appropriate.*

Hi

In the clan member list there are three buttons: "Info", "Challenges" and "Deselect"/"Kick".

When I click the "Challenges" button (I want to see all challenges for a particular member) I assumed a list of challenges that contain that member would be returned, but this is not the case.

Is my assumption incorrect or is this a bug?