In 2.5.8 Beta 1 offline contacts are now shown in their groups. But we mostly send broadcasts to all online users only. So we need option (checkbox maybe) to select only online users (maybe someone will need to select only offline users, so there could be two checkboxes).
And there is still Offline group shown in broadcast window. So now offline contact is represented twice and so it can get broadcast twice if you forget to deselect that Offline group. I think maybe it’s not needed there. Because it shows all offline users, from transports too. But i dont need to send broadcast to transports.