Perk stat bonuses

Are they supposed to be added at the end and not interact with other perks and traits?

Like, for example, my HP goes from 2.16M to 2.5M right now with a 5-creature Hybridization.

I don’t really mind this behavior, just curious.

Health bonuses that work similarly to Hybridization are only calculated at the very start of battle, and then they’re not calculated for the rest of the battle. All other stats are generally calculated throughout the battle, though.