Well im not quite sure, the team has tryed to impliment the fact, that fiering an SMG when lying down can be troublesome, mainly cus u have to strech youre arms out in order to do so, so it should wobble a bit more than when standing or crouching, but i havent had it not fire in prone.
<font face="Verdana, Arial, Helvetica" color="white"size="2"><span style="font-size:10pt;width:100%;height:40pt;text-align:left;filter:wave(freq=2,strength=5,phase=3,lightstrength=20)color="black"><span on_mouseover="this.style.color='white'"onMouseout="this.style.color='white'">Fighting the fucking censorship!</span></font>