Ground rb tactical map

when ever i join a ground rb i get a small map not the full map like this

is this a bug or a setting this gives away my advantage in big maps

Under options, is the Tactical Map Scale set to 100% (just search for map when in options)? you can make it bigger or smaller there. You can also hold the left alt key, and then move your mouse pointer over your map to zoom in or out if you want.