Umbral Blades targeting is finnicky when playing online via server. Back when I played before Online Servers were a thing (So offline, but with global chat), targeting was fine.
This targeting was also a problem on the servers/multiplayer release and I never made a post about it, assuming it would be fixed next update. It’s still here though.
The targeting of the skill deviates the further you use it and as such I’ve recorded video footage of it, and will be happy to provide more if needed.
To compensate for this bug I have to click the ground before the monsters model or it will overshoot if it’s further away.