Now by default the barrel gives a single item per click when sneaking and a whole stack when not. So is it possible to introduce a config to reverse it so that players get a stack when sneaking and one item when not, just like Storage Drawers drawers' default behavior?

We can consider changing the behavior altogether, no need for config in that case.

That'd be good too

Apparently the current behavior is already the right one... Not sure what happened, but it seems fixed on master, so closing.