Wierd SlimeBlock Render Glitch

When I was messing around with sponges and Slime Blocks 1-3 blocks above water, and I saw a Render Glitch happening at certain angles(not mattering what view angle, but where the player was) and it rendered a slice of the world and when I got ~15 blocks out or so, When I placed a block(any block, even another slimeblock(I tried it with a slimeblock and a block of stone), It disappeared!(it looked like a barrier block with a shadow) When I was looking at that glitched block with water behind it in my view, The Hitbox was very dim, and I could still collide with the block, and my Y coord was 64, and it extends out forever(or very VERY far)! Thanks for the debug screen model name: IDUNNOMYNAME:*(