The latest version of Minecraft Windows 10 (and the betas, too) have a weird and extremely unsettling visual error where a lower portion of the sky is seemingly missing when spawning into the world, and looking above that causes the land in front of you to duplicate and rise, replacing that part of the sky (as you can see I'm not the best at explaining this kind of stuff). This, along with the extreme lag (although this may be caused by my own computer) makes it hard to play Minecraft without noticing this.

Could you please fix this bug? Thanks.