Slayer's Fang isn't proccing any perks or artifact mods when you have Nightsworn Sight and shots weaken targets. This only seems to happen if you kill targets in one shot but seems to work sometimes if you happen to get multikill with submunitions. Right now if you want to proc Repulsor Brace, Power from pain or Void Infestation with Slayer's Fang you need to have the target survive the first shot to get weakened and then proceed to kill them. Is weaken being applied after damage unlike volatile that appears to be applied before damage since when you have volatile rounds, Repulsor Brace is proccing consistently. Hoping for a fix since this is a perfect weapon for this season.