The damage change isn’t being calculated properly, your damage is being decreased instead of increased. This started happening since the WP update.
You can check this by testing it on a training dummy.
Just tested and appears to be working correctly.
50% headshot damage talent and ult bonus is working.
I have not been able to replicate this. When I tested the damage on the training dummy I got an increase in HS damage with OinTE. However an interesting thing i found is that i typically wasnt getting a HS increase of 50%. Rather I was only getting a HS increase between 20% and 30% depending on my charge time (I tested this with the longbow). I am yet to test any other weapons as of yet. Which weapon were you using to test this?
If the number is not 50% more with than without, it’s because of how the game calculates damage.
(I’m simplifying here for the sake of clarity, I know it is more complicated than that and that crit and headshot share a calculation)
Total damage = base damage + crit damage + headshot damage + other (like strength, backstab and such)
The 50% increase in headshot damage only applies to the headshot modifier, so the damage with One in the Eye becomes :
Total damage = base damage + (headshot damage x 1,5) [+ crit damage (if crit)]
This is also the reason why Crit Power property isn’t that good, and really depends on the finesse of the weapon.