Powder snow becomes invisible when viewed from a distance

Related issue: As shown in MCPE-130241, the size of the powder snow block appears to grow as you get farther away until suddenly vanishing.

This is tied to the sim distance the world is set to once the chunk is unloaded all powdered snow in the chunk will disappear

Steps to reproduce 

1 locate or place powdered snow block 

2 Back up until chunk is unloaded due to leaving Simulation distance

Expected result 

Powdered snow block remains visible

Observed result

Powdered snow block disappears

Powdered snow behaves like blocks that cover a part of their collision box with a transparent portion of their texture, becoming fully transparent at about 1/2 of render distance (MCPE-124841). Powdered snow seems to be the only full block (or block with a full opaque texture) that does this. It does this even if you remove the alpha/transparency layer from its texture file.

This behavior may be related to the ability to see through multiple powdered snow blocks when inside of them, i.e. the use of a transparent texture for inside-block rendering.

When powdered snow becomes invisible, it also causes blocks that touch it behind or above/below to become invisible, and any blocks touching them, and so on. The result is that invisible powder snow reveals any hidden caves behind it or lets you see through the world. However, this is probably normal rendering optimization for contiguous opaque blocks. Powder snow is just supposed to be opaque from the outside.