It is possible to replace a 2+ high snow layer with an other block

Steps to reproduce :
-Place two snow layers on a block.
-Try to place any block on top of the snow layers

What I expected to happen :
-The new block would occupy the space above the snow layers, as it would in PC edition

What happened :
-The new block replaced the snow layers

Why it doesn't happen in PC (MCP code):
public boolean isReplaceable(IBlockAccess worldIn, BlockPos pos)
{
return ((Integer)worldIn.getBlockState(pos).getValue(LAYERS)).intValue() == 1;
}