Frost gun auto attack bug

[Stoba]

Currently when using Frost gun ( not sure if it applies to all guns) normal attack, I can have a mob/player directly behind me and if im strafing or running away the attack will shoot off into nowhere. I have tested it many times and there is nothing drawing the shot in whatever random direction it goes. Currently if I want to make sure a normal attack lands I have to stop, turn, and face the target. Please address this issue.