There is weird bug where shadows will only appear around chunks that were being simulated where I last logged off, if I logged back on, the shadows around me would render properly but when I walk to a structure anywhere outside of the render distance the shadows of the blocks would not exist. Image 1 is walking into a non rendered area, image 2 is the same area, but after relogging inside of it. The light on the wall in image one is coming from outside.