This is kinda broken for me. I mean it works mostly as intended :) First time i've used this trait, it gave me 11 point. That was when i added this mod somewhere in the middle of building up my mod list.
After some more mods on top, my game started to lag, so i've built up my mods a few at a time adding more. At some point (probable before i added some more trait mods) trait was giving 10 points.
Now, when i'm finally done with my mod list, it gives 12 points. And also +1 mechanics and +1 electrical. Which is definitely not how it is suppose to work lol

So, yeah i think i'll just RP it as that initial bite gave me some innate understanding in mechanics and electrical. Somehow.
It's probably some sort of conflict with other trait mods (which i have a few of them). Game isn't really broken per say, kinda funny in way!
Build 41. SP.

Thanks for the report! My best guess is there is another mod that might be using the same trait name "Bitten" or there is just a mod somewhere in that list that is *really* messing up this one for some other strange reason. I will take that into consideration some time in the future, but I'm glad it hasn't completely ruined the experience for you.