Melee change before 1.27 experimental = Light jab, then hold shift while pressing left click. They must be done together in a quick fashion. You'll know that you've done it because your initial JAB will count as a heavy attack
After 1.27 = this is no longer the case.
( This was left in the game for a large number of years for it only to be changed now? Players shouldn't be punished for taking advantage of something that the developers ( YOU ) left in the game )
With the melee part of DayZ already being incredibly unstable and janky, I truly hope you guys have something to replace this.
Thanks