Version 1.3.0.3 Bug found while in the Armory campaign map.
Rip Blood - Blood Catalyst is supposed to recast when it kills any target. It seems that killing targets with Rip Blood too far away from you does not trigger a recast. This range is even within the normal range of Rip Blood.
This is 100% reproducible. Find a group of barrels. Stand near max range and cast Rip Blood to only hit one of them and the other barrels will still be there because no recast occurred.