Observed Result
The stone_block_slab does not appear in the block ID candidates for the fill command, and the smooth stone half block argument cannot be searched.
Expected Result
Currently I have managed to divert it from another candidate like stone_block_slab2, but please bring back the ID of stone_block_slab and make the candidate for the argument appear!
Comments 2
If you're referring to the smooth stone slab, the correct command is /fill x1 y1 z1 x2 y2 z2 smooth_stone_slab
If you're referring to the stone slab, the correct command is /fill x1 y1 z1 x2 y2 z2 stone_block_slab4 ["stone_slab_type_4"="stone"], unless you're in the Preview, then it is /fill x1 y1 z1 x2 y2 z2 normal_stone_slab, see MCPE-182109.
If you're referring to the smooth stone slab, the correct command is
/fill x1 y1 z1 x2 y2 z2 smooth_stone_slabIf you're referring to the stone slab, the correct command is
/fill x1 y1 z1 x2 y2 z2 stone_block_slab4 ["stone_slab_type_4"="stone"], unless you're in the Preview, then it is/fill x1 y1 z1 x2 y2 z2 normal_stone_slab, see MCPE-182109.