There is a lot of issues with targeting in game right now. 

First, any obscuring elements like trees and columns prevent you from targeting ground behind their model as game tries to shoot column/tree instead.

Second, game often snaps shots to destructible objects like exploding containers, even if you targeted something else. Happens a lot when firing from cover. Even if you target enemy in front of you, game may fire at explosive container instead that is to your far right.