(iobviouslysearchedbeforepostingthissodontblamemeifthisisaduplicate)

When a snow layer block is on top of a grass block, and the player places a flower, tall grass or certain other things on top of it, it gets placed, but the snow layer is removed in the process. This is obviously not ideal since the bedrock edition allows snow to occupy the same block space as the blocks in question, and therefore the snow layer should not be deleted when the item is placed.