leech node duelist area does not appear to be working

Bug Reference number 4,178,309,080.

The first leech and mastery node (.4% attack damage leeched as life/mana) near vitality void does not appear to work. I am lv 24 duelist using a bow.

Ingame dps tooltip 265.6 should provide me with 1.06 leech however, I do not see any increase.

MY damage may be too low, but if I shoot something and run behind a wall, for over a minute I do not receive an increase.

Testing at 404.1 tooltip 302.83 character sheet, does not work.


Please disregard it appears to trigger intermittenly at 460 dps.