On newer client version like 4.11 basalt biome doesnt generate

[DFeniks]

On newer client version like 4.11 basalt biome doesnt generate , instead there is empty space , dust biome is floating in air and bare stone under.

I tried with some of the newest 4.10 dev builds pre 4.11 and in this case it seems there is some basalt line about 2 nodes deep , but most of it is replaced by dust.