I think there might be some kind of weird thing with hit detection. I had a roland firing at a hovering recon heli. The heli was flying over a a little copice that i knew there were some units hidden in. The rockets from the roland where detonating over the wood in front of the heli and +15 kept popping up over the wood but the heli didnt take any damage.
I had never seen this (but had read about it) before this last patch. It's now happened to me two of the last three games I've played NATO. Don't think I minded as the four Roland's took out three APC's and the chopper in fairly short order. A smart PACT player could exploit that to protect gunships I guess.
This bug is well known by now I think, but not from the last patch
I've seen a Chapparel take out one of my (damaged) T-80U's when firing at air before the recent patch. And I have seen land unit kills for my own AA units sometimes as well. freaky stuff