This is for 1.14.0 again. After the village and pillage hotfix that set the mobs to not spawn on leaf blocks, or other transparent blocks, they are now able to do so again. This time, even light levels are ignored, allowing them to spawn anywhere and everywhere during the night and underground at any part of the day cycle. They will even spawn in dark enough shade during the day cycle regardless of manually placed lighting. It's as if the manual lights are only set to emit light and no other effect is applied (or the mobs' light/spawn restrictions have been removed in this update).   Suggestion: forget trying to add more stuff. Just fix the broken parts of the game and make sure the next update doesn't overwrite and flash with current coding. Like EVERYONE has been asking for since 1.08 was released. Patience is not a virtue, it's a name to place blame.