This has been something I've noticed since the official 1.2 release but may have happened in the beta too.
When I move a full stack of cobblestone (or any item) to a furnace by selecting it and choosing the move all option, if there is a partial stack in my inventory it will fill that stack first and then move what's left over from the selected stack into the furnace. This happens every time partial stacks exist in my inventory and is extremely annoying as I have to then move more from another stack into the furnace to fill the furnace to 64 blocks. The move all should ignore other inventory stacks and move it to its destination.
The same thing happens when moving stacks to chests. It will fill an inventory stack and then move the remainder over to the chest.
Linked issues
Comments 3
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-19952.
Your additional information and observations are very useful, so if you can add them to the comments section of the parent issue it would be appreciated.
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I have noticed the same thing and this issues makes it take a bit longer to divide your material and distribute it into multiple furnaces.
For example:
I have a stack of 40 iron ore and want to put it into 4 furnaces.
Split it in my inventory into stacks of 10
Open the first furnace
Select a stack of 10 in inventory
Hit button for move all (Y on my controller)
Result:
I now have a stack of 20, 10, 10 in my inventory and noting in the furnace
Expected:
Stack of 10 should have gone to the furnace