03-15-2013, 02:04 AM
They already should, but lava is really slow, so it takes a while for it to spread.
Note that chunks are only simulated if there's a player who can see the chunk (for performance reasons), so generating using ChunkWorx is not enough, you actually need a player to stand there.
But vanilla is the same - it just happenned to me a while ago that I happilly built a wall around my portal to get rid of ghasts shooting me down, and suddenly lava started to flow in from the top. Nasty surprise
Note that chunks are only simulated if there's a player who can see the chunk (for performance reasons), so generating using ChunkWorx is not enough, you actually need a player to stand there.
But vanilla is the same - it just happenned to me a while ago that I happilly built a wall around my portal to get rid of ghasts shooting me down, and suddenly lava started to flow in from the top. Nasty surprise