Rend (wyvern) not hitting enemies dashing or leaping

So numerous times I've seen my Rend attacks stagger or "glitch-out" when trying to attack enemies who are leaping at my character(and maybe dashing as well, not a 100% on that one) without taking damage. The enemies sort of glide around my wings and land taking no damage.

Not certain if this is intended or not, but it does seem a little odd, the animations. it actually stops my character from moving forward and seems to cause me to veer off ever so slightly.

I forgot to put for clarity, my character currently has an estimated accuracy of 100%.