Using lvl 1 hell sweep with labreve branch it only do 1st kick animation and no 2nd kick, so the hit damage of 4 hits, became 2 hits if it has labreve branch. So its total damage reduced to 50% of original damage

While using hell sweep with Ahib branch it does 2 kick animation a total of 4 hits as skill description says.

Is this bug? Or function of the skill?