when i entered isle on conquest the ally were bugged they were all green cant attack em(im horde) and we just ran across the whole BG and entered into there fortress without breaking down the gate, we killed the leader then we didnt win, not were currently playing the BG still trying to win, then boss respawnd so we killed the leader then we won.
There's a exploit in strands (I wont say what it is) and the freindly thing for a few seconds is to prevent the exploit happening, so I guess blizzard arent just doing it in strands as well.