Q:
Spectral Grasp
Yes, like any projectile, spectral grasp can miss (even without dodging) this is indeed intended (though i wish the projectile was faster or simply harder to dodge without a dodgeroll).
However this doesnt mean spectral grasp itself is working as intended. As you said sometimes the pull becomes a knockdown. This is a bug and i think the reason for this is in some terrain you target simply gets stuck on something.
Sounds a lot like Scorpion Wire for thieves. I find that if the pathing of the pull isn’t clear, it will just be a knockdown. This occurs most often in Skyham when you use it just outside point A or C. Teleports from beyond the breakable floors to the point often glitch out as well, so I think it’s a terrain issue primarily.