That situation happens with a luger; most anytime the round is only part way out of the magazine.
I never shoot alone, as one never knows what might go wrong.
Because of this practice, I control the luger and have my buddy help extract the magazine.
I also carry a "stick" and a screw driver!
Such a jam is usually due to "weak" recoil; the empty is not fully ejected but the bolt is far enough back to strip the next round- or the ejector is at fault. Or the shooter "limp" wristed on that shot.