Board Thread:Bug Reports/@comment-25565811-20161110164912/@comment-25330335-20161111000627

Ffets wrote: They don't generate on half slabs, they generate only on full blocks. This is why they are missing on half of the road.

Perhaps, you could remove generation, if the road would only consist of half slabs (lower and upper ones) instead of lower half slabs and full blocks. Not sure if grass, trees, .... grow on the surface of upper slabs. Upper slabs should behave just like a full block. Actually, half slabs do too, minus that fact that they are transparent on top and therefore can't have anything directly on top of their surface. I think some of this is fixed in newer MC versions, but I can't be sure.

I would say that the two easiest ways to fix this bug are either: a) add an option to remove half-slabs, and leave default as is b) be happy with how it is and that nothing is generating on top of the lower-slabs