For example, if you have a svt and fire two shots and one is "lost" due to that bug, the one that hits him will likely drop him. With the pistol chances are very high that the one shot that registers will not be an instant kill.
This is the single biggest complaint I have with how hit detection and shooting works. Using the SVT or anything else on semi auto, at close range it just feels like those first one or two shots vanish into thin air. Lots of times I've fired a single shot, being guaranteed to hit someone....and died because it just never registered. Meanwhile my opponent head shots me with an MP40 like it's nothing.
It's gotten to the point where I fire way more rounds than necessary in CQC to kill someone, just to be on the safe side.
Meanwhile, at 50 or more, I single shot perfectly every time.