When making a super flat world the void particles exist above the void and the sky is black when this should only happen in regular/super biome world generations.
To Recreate Bug:
Create a new super flat generated world (I did it with structures turned off)
24th Duplicate of MC-34889 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.