07-31-2021, 09:54 PM
This is not a bug. As far as I'm aware, the 'only replaced by stronger status effects' is only in a few cases, and secondly, the reason you're getting this behavior is because of Snake Shot's effect.
Basic Attack -> Critical -> Check weapon critical effects -> Snake Shot checks if it was a critical -> Snake Shot checks if the target is poisoned or not. Since they're already poisoned by the bow's effect, it applies Snake Wrap instead, not poison.
Basic Attack -> Critical -> Check weapon critical effects -> Snake Shot checks if it was a critical -> Snake Shot checks if the target is poisoned or not. Since they're already poisoned by the bow's effect, it applies Snake Wrap instead, not poison.