Clicking on the anchors on a sticky note adds another sticky note next to it and connects to that one.
But when there is a sticky note nearby (even on a different y-axis), it connects to the existing sticky note. This is fine and often what we want, but it would be nice if, by holding a modifier key (ctrl/alt/option/...), we can force a new sticky note to be created instead of it snapping to an existing one.