In Stable, you used to be able to split a stack in half, or take one from a stack, drop one from a stack, etc. On the nightlies and unstable, to my knowledge, you can only split a stack in half, unless they changed this feature to a different keybind? In other words, if I just want to give my friend one item out of a stack, how do I do that
I've only ever been able to split a stack in half, be it Stable or Unstable or Nightly. Are you sure that there wasn't a mod of some kind enabling this (assuming this kind of thing can be modded)?
I don't remember ever being able to split by anything than half either. And I also don't understand why it's still not possible, splitting stacks in half continously just to get 1 item off of a stack of 1000 is just plain annoying to no end.
You can make a suggestion in the Suggestions forum if you would like to have this behavior changed: http://community.playstarbound.com/index.php?forums/suggestions/