Basti67 There is a config named Native Haki that allows mobs to have the effects of bushoshoku haki if they do above a certain amount of damages. It works only for vanilla and other mods mobs. And since bigger mobs are often strong, that could be the reason.
Goose what do you mean by "entities that have more than one hitbox?" the only mobs i know of that have multiple hitboxes are the ender dragon and the dragons from ice and fire which are all strong enough to be given native haki, and have magic attacks that bypass invulnerability it seems like youre just fighting enemies that are too strong to use a logia against