Lighting Glitch and Broken Block Models

I recently updated my SMP server to the latest snapshot of 19w39a and discovered that there were some severe lighting glitches as well as block / mob models being completely broken. When i stand about 3-4 blocks away from a chest or a bed the lighting glitch seems to make the blocks transparent and more contrasted than other blocks. I also discovered that the turtle models are completely broken as well as a couple of other block models