Please see video: https://streamable.com/c2al8r: (https://streamable.com/c2al8r)
When the hunter is in cover, he is able to shoot players but he's neither out of cover nor is he blind-firing from cover. Before engaging, I pulsed so that the hunter could be seen easier — he's in cover, he doesn't have his arm out, and there is no animation showing that he's shooting.
I haven't seen other hunters do this. It only happens with this one specific hunter. I recorded this in TU16.1 but this still happens in TU16.2.