around 370 000 block away form the center point of the End Dimension, the terrain of the end stops. Then at around 524 000 terrain starts again and at 642 000 terrain stopes again. it start at 750 000. this Glitch will continuously shrink in size like this image down here. This show what a visual of what it might look like

endstone is end island

void is the corrupted terrain

end gate way is the main end island

the concrete show the length of the corrupted terrain (not in scale) while the cyan concrete shows the world border. These corrupted terrain will keep repeating itself after 370 000 till the world border but the size keep decreasing when it is further away form 0 ~ 0. But the strange thing is that all corrupted circle terrain has the same area? that why the length of the corrupted terrain decrease when it is further away form 0 ~ 0 .

this bug way first found in the shapshot of 1.14 18w46a and has not been fix till now.