Faith enemies giving negative favor?

[Dovan]

As not to ruin to much of what transpired or the person's character, I'll try to do what I can here. That being said... two faith enemies squared off recently in a pk situation, both clearly displaying opposite symbols of each other. At the end of the exchange, when the final stroke was cast the victor was given a negative favor hit twice instead of any positive. Here's the final exchange (as well I have much more log than this):

You must MURDER a player.

With a sickening sound your slash violently shreds A *editted to peserve character* chest.
A *editted to peserve character* is DEAD!
You sense that your patron is displeased by your actions.
You sense that your patron is displeased by your actions.
You hear A *editted to peserve character*'s death cry.

Seeing as fleeing from opposing faith is going to give a hit, that and there's an order for each faith that's purpose is to kill each other off; I'm thinking that negative hit was in the wrong. I'll be glad to give more info and log if that'll help, I'm just doing my best here not to give too much away for the sake of those involved.

[Moloch]

Bugzilla'd.

Thanks!