Multiple Bug report

Bug 1) Creating 2 tick projectile mechanic rapid shoot doing 2 damage. One is onhit and other is bulletType=ARROW. Other bulletTypes doesn't have this bug. bulletType=ARROW it shouldn't do damage but it does. The same applies to the bug Shoot mechanics to if i set damage in onhit. This bug happens when you are within 3-4 blocks of the target. Video of the bug: https://www.youtube.com/watch?v=A97UE_imoes

What you need to be able to test quickly:

(The standard NoDamageTicks has the same bug. When the NoDamageTicks number is low, it is easier to see the bug.)

Mob:

test_1:
  Type: SKELETON
  Health: 10000
  Damage: 1
  AIGoalSelectors:
  - clear
  AITargetSelectors:
  - clear
  Options:
    PreventSunburn: true
    Silent: true
    Despawn: true
    FollowRange: 20
    MovementSpeed: 0.001
    PreventOtherDrops: true
    PreventItemPickup: true
    KnockbackResistance: 1.0
    PreventMobKillDrops: true
    NoDamageTicks: 1
  Skills:
  - message{m="Damaged by <skill.var.damage-type> for <skill.var.damage-amount>"} @PIR{r=50} ~onDamaged

Skills:

rapidshoot_test:
  Skills:
  - skill{s=IceBolt}
  - skill{s=IceBolt;delay=2}
  - skill{s=IceBolt;delay=4}
  - skill{s=IceBolt;delay=6}
  - skill{s=IceBolt;delay=8}
  - skill{s=IceBolt;delay=10}
  - skill{s=IceBolt;delay=12}

IceBolt:
  Skills:
  - projectile{bulletType=ARROW;onTick=IceBolt-Tick;onHit=IceBolt-Hit;v=40;i=1;hR=1;vR=1;hnp=true} @TargetLocation
IceBolt-Tick:
  Skills:
  #- effect:particles{p=snowballpoof;amount=20;speed=0;hS=0.2;vS=0.2} @origin
IceBolt-Hit:
  Skills:
  - damage{a=50} @target

Bug 2) Options version of NoDamageTicks working fine but Mechanic version of setnodamageticks doesn't work.