u know in top of screen we can see i think the flag carier name in bg. Why i cant see it for ages? what addon can cause that? dbm, aloft, fluid frames, ion, x-perl?... or no one but my blizzard interface is buged?..
/sigh.... unless it changed with 5.0 then the default UI shows the flag carrier at the top of the screen in the World State Frame. I haven't had the time to jump into any BG's since Mists dropped though so I can't be certain it's still there.
According to the description of Capping it does provide this information if it is no longer present in the default UI. It also looks like it allows you to move it to a location that suits your needs.
DBm also did this , not sure if it still does as I use bigwigs and dxe now. make sure dbm battlegrounds are turned and out of date addons are loaded in your addons.