Skill tree - combat tree - ultimate perk - vampiric tendencies - is it working?

[Gryld]

Skill tree - combat tree - ultimate perk - vampiric tendencies - is there a way i can test this? It doesn't seem to be working but wondering if there's a way to see the healing somehow, in a log or something to prove that it is working or not?

I'm wondering if all the healing is being rounded down to 0 because all of the healing must be below 1 hp?

thanks