[1.63 & 1.64][SSP] Turtle Cannot Put Items in Furnace [NoBug]

VERSION:
1.63 and 1.64pr4 (report is posted here and not in the beta forums is due to the fact that it applies to both specified versions)

DESCRIPTION:
I put "turtle.drop()" into the Lua console and in a program. The turtle can successfully put fuel into the furnace, but it cannot put ores or food into it.

EXPECTED RESULT:
The turtle should have put the ores and food into the furnace when I typed "turtle.drop()"

REPRODUCTION STEPS:
1. Place a turtle facing a furnace.
2. Put any type of food or ore into the first slot.
3. Go into the Lua console and type "turtle.drop()"

SCREENSHOT:

Spoiler

To prove that the furnace is empty

It doesn't work for the same reason you can't pipe ores and the like in via the side using itemducts or whatever: You need to drop them in from the top instead.

Not a bug. As mentioned above, furnaces are sided inventories and the slots must be accessed from the correct sides.