I will be just walking around above ground and then this visual glitch will start to happen. My game also lags and also happens in creative mode (I reported this while in survival and later it happened in Creative). When I leave the world I'm in then go back into it it disappeared. When I walk into the glitch it hides some of the chunks and only mobs and a few sections of land a visible while the glitch is happening all around me. It also happens in the Neather