Block double_stone_slab:9, double_stone_slab:8 are no longer obtainable in snapshots and pre-releases
diorite, andesite, granite are not obtainable in pre-releases
type /give (player name) double_stone_slab:9
also for double stone slab 8
granite, diorite, andesite appear as stone texture in pre-releases and are not obtainable in the inventory
Many Thanks, it is still not fixed