Attempted to search the forum as I thought there would have been more people experiencing this strange bug.
As of the last major patch, I noticed that many monsters have been teleporting instantly back in front of me after using a knock-back skill (ie. flamethrower’s air blast or shield offhand skill 4 on engineer) kind of defeating the purpose of my knock-back skills.
Rather annoying since I’d like for them to be knocked back then have to run back to me instead of instantly teleporting back and smashing me in the face. I can provide video if anyone needs. Just have to render it and upload it is all 
Sindarian Vagrants [Rune]
Covenant of the First Flame [Soul]
Covenant of the First Flame [Soul]