It looks like they fixed the shields. I was unable to head shot the owner when facing me. I even tried shooting his lower leg and foot and I could not hit him. I have not had the chance to see if the AI turret has been changed too. Is this a designed change making the Engineer impossible to hit with a bullet when head on? The Engineer in question turned and exposed his side and he did drop.
Yeah, feels like AV turret has invisible shield. I haven't tried to shoot somebody standing behind it, but I've been shot by the snipers and bullets hit to the turret, and I guess it's not because snipers are bad.
The only reason I know this is some new guy setup a turret right outside the bio lab spawn room. He didn't move and I did't miss 3 x in a row LOL. I watched the hit and nada.