/summon and /setblock cannot specify chests, furnaces, dispensers, rails and droppers orientation

Using the /summon or /setblock command to spawn a dropper or a dispenser works but data tags cannot be used to specify the orientation.

To replicate:
Create a command block containing any of the following commands:

setblock ~2 ~ ~ minecraft:dropper 1 replace

summon FallingSand ~2 ~ ~ {Time:1,TileID:158,Data:1}

Both will spawn a dropper facing in the default direction of South, regardless of the value of Data (if placed against a wall the dropper will adjust to face away from the wall). Applying the data for repeaters, hoppers and comparators work fine.