The problem is when you create a "empty world" when you generate a superflat world with the preset "3;minecraft:air;0;village" It only happens when you have the block set to air.
The problem is when you create a "empty world" when you generate a superflat world with the preset "3;minecraft:air;0;village" It only happens when you have the block set to air.
Is this still an issue in 15w44b? If so, please explain the issue in detail and provide steps to reproduce it.