The sides of blocks are see-through, the floor is missing in the distance and all incorrectly rendered floor is pure black until you get closer. It almost resembles the fog effect, but much closer and black. Reloading the world and the chunks does nothing, and it's happened on two different worlds.
Environment
Windows 10, Java fully updated, Default world type with default settings. Texture packs are default and Programmer Art.
this is due of "Programmer art" pack. This is an in texture pack file bug. Also duplicate of MC-165959