I was playing on a Server with Friends of Eternal Bedrock Platform in 1.16.220 building the area of ​​my Villagers, I was removing the roof and Gravel fell on Slabs that were placed in the lower half of a block. When the gravel fell it was burned and it seemed that it was in a cobweb and was passable, it could not be broken and if I clicked it with the shovel it seemed that it was dirt that became a dirt road or Dirt Path since the shovel was worn After a while the gravel broke and I decided to test if it happened again, not only did the bug happen again, but the gravel was piling up in the same block with the other blocks of Gravel. To execute the bug they must put slabs so that it is the lower half of a block, throw Gravel from a height (DO NOT place it on the block if not put it to fall by gravity) and you will see the Magic.