Issue with orientation of Observers

[schrum2]

It does not appear to be possible to orient Observer blocks in an UP or DOWN orientation. Here is some code, and a screenshot of the resulting in-world placement:

import grpc

import minecraft_pb2_grpc
from minecraft_pb2 import *

channel = grpc.insecure_channel('localhost:5001')
client = minecraft_pb2_grpc.MinecraftServiceStub(channel)

client.fillCube(FillCubeRequest(  # Clear a 20x10x20 working area
    cube=Cube(
        min=Point(x=-10, y=4, z=-10),
        max=Point(x=10, y=14, z=10)
    ),
    type=AIR
))
client.spawnBlocks(Blocks(blocks=[  
    Block(position=Point(x=1, y=5, z=1), type=OBSERVER, orientation=NORTH),
    Block(position=Point(x=3, y=5, z=1), type=OBSERVER, orientation=SOUTH),
    Block(position=Point(x=5, y=5, z=1), type=OBSERVER, orientation=EAST),
    Block(position=Point(x=7, y=5, z=1), type=OBSERVER, orientation=WEST),
    Block(position=Point(x=9, y=5, z=1), type=OBSERVER, orientation=UP),
    Block(position=Point(x=11, y=5, z=1), type=OBSERVER, orientation=DOWN)
]))

Both of the last two blocks (UP and DOWN) seem to be oriented toward the NORTH.

However, I can orient Observers vertically when I place them within the game world as a player.

[djole]

Hi, this seeems to be an issue with the version of Sponge. There are few artefacts that have this problem. Unfortunately, updating Sponge is not at all trivial, so it's a todo for now.