It's not a Vilya problem, I think it's a tactical attack problem. I first saw this show up a couple years ago when I started an RK on BW, and then again when I started my mini here.
Clearly that npc is exploiting... you should /report it to Turbine, they're always on the ball when it comes to exploits in game.
I'm Handi-capbale! FERVOUR: "Increases your Melee damage by something approaching 20%... the math is complicated so we can't be exact. Rest assured that we will not err in your favor though!" Hakon_Stormbrow TEAM F