Im playing a umbral strikes poison build and was playing the game normally and have noticed some maps are areas of maps that force me to throw my blades at the ground in front of my feet even when I click near the end of my monitor.
This is usually not a big deal since it rarely happens in most maps, but I just entered a map called ‘Ritual Lake’ and all of my throws with umbral strike seem to now cover 0 distance no matter where I click to attack (on this specific map).
There seems to be a problem with this specific map - especially the water areas - where a lot of ranged skills are messed up and not working as expected - it happens with Rogue Chakram, Mage Static orb and Sentinel Hammer throw. And now you are describing very similar issues with Umbral Blades too.