TCP APP display in Interface Group

I have set up an interface group to combine the WAN interfaces of two routers either of which could be used for traffic. This works fine. However, I am seeing the entry TCP_APP as a fairly heavy application. When I click on TCP_APP it displays the sessions involved with port *. However, when I click on the small box that appears after TCP_APP it says there is no data to display.

I have set up multiple interface groups and this happens for all of them. When I go in via a single interface on a single router then clicking on this box displays the ports and I can then add an appropriate application.

Is this a bug for interface groups? If so, can I please have a fix as I don't want to have to go in on each device interface individually to get this information.