.setPosition and .position changed places. .setPosition is the opposite of .getPosition (as it should be, now) so it takes x/y coordinates. .position is the one that lets you position an element relative to another.
in theory, both functions know how to interpret each other's arguments, so this shouldn't be a breaking change.
I really don't know why this would have broken anything given that all I changed is that PopupDetails now loads after StickyWin, neither of which touch the positioning code...