Blocks drop out of falling sand blocks even when gamerule doTileDrops is false

When I did this command in the blue "Repeating" command block, /summon FallingSand ~ ~1 ~ {Time:1,Motion:[0.0d,1.0,1.0d],Block:stone}, It would do what its supposed to, but blocks would fall out as items, like you dropping stone out of your inventory, even when gamerule doTileDrops was set to false.