Its a major bug...and it seems like the only people not talking about it is ZOS. Here's another thread making that same point: https://forums.elderscrollsonline.com/en/discussion/477137/bg-ques-can-we-get-acknowledgement
That being said, the more frustrating problem, IMO, is getting into a bugged queue where the BG game never starts, forcing you to take the deserter penalty.
I mean, at least you get AP for losing on a team of two instead of sitting out another 20 minutes waiting for a 2nd chance?
True that nobody is talking about it xD