how long mobs begin spawn on blocks with spawn ban tag? i wanted construct base without lights but i see that… [2020-05-03_17.31.58] [2020-05-03_17.33.15] [2020-05-03_17.35.45]

THIS IS OPTIFINE!!! I thinked, this is mod with mob or world changing, but this is sudden… OptiFine_1.7.10_HD_U_E7.jar added like mod [2020-05-08_03.47.20]