When End Cities are generated on chunk borders, a huge part of them gets cut off and sometimes cause lighting glitches when loaded
In 2 of the screenshots, you can see that the End City gets cut off by the chunk border (Look at the top left of the screen for chunk info)

Unrelated:
Also, in one of the pictures you can see a floating chorus plant. I have no idea how that is there, but I decided to include it anyway xD