No forgiveness annoint weird interaction with Measured retaliation

So I was pretty excited about getting the hidden notable on my amulet, spend the currency, only to see that it somehow makes the procs noticeably worse. At first I thought I was imagining it and blamed it on RNG. Then I went to test it and...

With only the ascendancy node I'm getting as expected, about 1 in 2 attacks doesn't consume the charge/cooldown.
As son as I put on the amulet with the annoint, more often than not I'm not getting any procs, where as with 70% chance, I'd expect it to gives me an average of 2/3 at least... it's nowhere near that, in fact it feels at least reversed, 2 out of 3 I get no procs.

Anyone else noticed this ?