I did some forum digging but most folks attribute this issue to the teleport timing or self-rooting after the teleport portion of the skill, either way the issue still persists.
After landing the first part of the shadow shot skill (with target well within range), the blind would hit but the following shadowstep dagger strike would miss more than half the time (tested on random world creatures as well as WvW players/creatures). Please make the skill hit when its suppose to otherwise D/P is not functional. Thanks!