Sniper rifle bug

[Kharnamatic]

Headshooting/critting an enemy mob does not have any effect on his health bar. The damage number appears showing a crit, but the mob remains at full health.

Screenshot:

[Stygy]

I've got the very same problem. Hit is accounted in numbers but nothing happens. Most times I don't even get aggro of that mob. I already traded the rifle to a buddy of mine. All works fine there, but even after trading back it doesn't work for me.

[Bill scant]

Most of the time this bug is caused by the gunslinger perk, if your using it , un equip it, if your not using it sorry cant help.

[Stygy]

I don't have gunslinger skilled...