When connecting to the MP server (CUSTOM world type), all of the terrain loads around the player as expected. When the players runs to the boundary of the rendered blocks, no additional blocks/chunks are rendered ahead of the player. All of the blocks are in place because boundaries are still intact. i.e. the player doesn't fall through the world, but rather collides with the blocks that are there but not rendered visibly.

In the previous snapshot, a similar issue occurred, but it would always render a 10x10 set of blocks directly ahead of the player. Now it renders nothing, giving the player a view "into" the world behind.

Changing video settings (e.g. moving the render distance up or down) causes the client to render everything correctly, but as soon as the player reaches the edge of the newly-rendered chunks, the same issue occurs.