Seeds from the world-settings config are parsed as integers while in vanilla it may possible for them to be (and usually are) longs. This makes it impossible to use most seeds to predictably generate structures and have vanilla behavior. The attached pictures relate to the seed `-8520464341868628165`. A quad witch hut should spawn at approximately 4472, 2920 but this is not the case in Spigot as that seed is instead parsed as `227129147`.