Unlike the old lighting bugs, placing a light source in these areas does not fix it, instead it acts as if the area is under ground. Mobs spawn, and light level from the sky reads as 0. We lit up one of these areas at one point, only to return and the torches were no longer giving off light.
Oddly, in creative I found that these dark patches have different heights. One black chunk flying to 96 height the sky light read 15 again, another was 113 height. It seems to be acting as if there are invisible blocks preventing light from reaching the lower levels.
Unlike the old lighting bugs, placing a light source in these areas does not fix it, instead it acts as if the area is under ground. Mobs spawn, and light level from the sky reads as 0. We lit up one of these areas at one point, only to return and the torches were no longer giving off light.
Oddly, in creative I found that these dark patches have different heights. One black chunk flying to 96 height the sky light read 15 again, another was 113 height. It seems to be acting as if there are invisible blocks preventing light from reaching the lower levels.