The problem is black spots on stairs and slabs.
I made a world:
Superflat -> customize:
1 layer bedrock
1 layer redstone block
1 layer stone
75 layers smooth quartz blocks
The Bug occurs on any height in the map on any coordinate and with any stairs and slabs.
I used redstone lamps as lighting but also with torches it will occur.
The smooth lighting is set to Maximum but also with minimum or off it will give black spots.
I hope the problem will be solved once and for all.
Related issues
duplicates
Attachments
Comments


also is a bug in survival and adventure
tested out with redstone blocks, quartz stairs, quartz slabs, quartz blocks, pillar quartz blocks, chiseled quartz blocks, stone brick slabs and stone brick stairs.

30th Duplicate of MC-92, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.