Traded stackable items do not stack
 

If you trade an item that stacks to someone else - it does not stack in their inventory, rather it takes a new slot.

Bump? Still true.

Did they stack when traded on live?

I am unsure.

But it is unclear what bugs are to be fixed and which are not.

On live, a tradeskill attempt with the wrong items ATE the items. On here it does not.

On live, stuff left by accident in a forge stayed there. On here it is returned.

I don't think fixing items to stack will ruin the classic feel anymore than the above, which are both altered.