Darkroom spawner shows level 15 skylight, 0 blocklight at night. It was reading fine, then changed when chunks were reloaded. This happened between server restarts and was not initiated by a server restart or launcher restart.
Environment
Darkroom spawner shows level 15 skylight, 0 blocklight at night at Y 190 in forest biome next to cold ocean biome
Duplicate of MC-149518