I seriously doubt I'm the first to wish for this, but just to add my voice: It would be gloriously wonderful to have consistency when pulling stacks of things between packs/chests/etc... Sometimes I move a stack I get the whole thing.. sometimes I get one... sometimes I need to hit shift to get the whole stack, half the time I do that there is only 1, every other time it selects the whole stack, pretty much guaranteeing I have to muck with the slider bar every other time. I don't really care how it works, I just want it to work *the same way every time*.. then I can get used to it and be happily un-irritated every time I move stuff around
If you have decoration enabled and the item can be placed in the world then you'll drag 1 item otherwise you'll drag the stack unless holding shift to for the quantity prompt.
On a related note, what's up with shift click on random items looted from enemies giving the "you can't leave items here" notice, and forcing a manual drag into backpack? That is a continual annoyance...
It would be nice if, when you use shift to select an item in a container in decoration mode, the default value was the size of the stack and not one. If I'm using Shift to move the stack it's obvious that I don't want to just move one item. If it defaults to the entire stack size and I only want to move a few of the items in the stack then I could type in a number. But, instead every time I use shift I have to type(or drag the slider bar) in the number. It's making me perform an extra step for every item I want to move around.