Sorry if this is already worked on, or is known and not a priority.
I suspect a lot of people have encountered this.

I started encountering this issue since version 1.3.1 when single-player mode was made to use the multi-player server code. Since then this pops up every time I play.

I'm building a very large structure, and, after walking around for a while, chunks further away from me start loading before closer ones - I end up seeing through walls. This does not go away if I stop and look at it, with the correct objects often appearing only when I walk right up to them.

Using a Mod that re-enables single-player code completely resolves this problem, but I wanted to know if anything is being done to address it.

I'm attaching several screenshots showing this issue.