Yeah it's still a bug... sigh.
The only way to fix it is to touch or walk into the black area so it can be rendered properly.
Oh my god, bug or not I have this problem in such bad situations.
I use AMD, does anyone else use AMD?
Maybe it's the codec in AMD and AMD needs to make a new profile just for minecraft.
I made 10 small buildings around a small area and 2/3's of my villagers crammed into one house.
At first I find it funny because they run and cram in clusters but I realized the rest of the houses I built are now useless...