The seed is 2409925020304925578.
While messing around I noticed the bug happening sporadically with all types of bricks. There would just be patches where I could not place a fence, or stairs, or glass, and have it be visible. Exiting the world and re-entering it causes the objects to be visible again, but I would run into a different patch later on.
Upon leaving the world and rejoining it, the fence reappeared and it doesn't seem to be happening anymore.
It doesn't sound like the same issue. The chunks I am building on are 100% visible. It's just NEW blocks that aren't.