Savage Melee Hemorrhage Doesn't work on Player Characters

[Eclipse.]

Was testing my build in RV tonight, and noticed that the main damage component of Hemorrhage -- the special DOT -- does not appear to apply when attacking player characters
 

 [01:30] You activated the Hemorrhage power.
[01:30] HIT Taran-Tella! Your Hemorrhage power had a 95.00% chance to hit, you rolled a 13.68.
[01:30] You hit Taran-Tella with your Hemorrhage for 92.23 points of Lethal damage.
[01:30] You hit Taran-Tella with your Hemorrhage for 91.79 points of Lethal damage [CRITICAL].
[01:30] You gain 1 stack of Assassin's Focus!
[01:30] You enter a hidden state.
[01:30] Kiz vahsi hits you with their Panacea: Chance for +Hit Points/Endurance granting you 7.5 points of endurance.
[01:30] You hit Kiz vahsi with your Panacea: Chance for +Hit Points/Endurance granting them 7.5 points of endurance.
[01:30] Hemorrhage is recharged.
[01:30] Taran-Tella MISSES! Web Envelope power had a 39.62% chance to hit, but rolled a 44.69.

DOTS seem to apply fine on NPCS, however the damage of the DOTS doesn't seem to scale appropriately with stacks of Blood Frenzy. in my relatively limited testing. 

Worth noting I only tested this on my stalker, not other classes.