Sorry for the delay of this answer!
Not sure what caused the positioning issue – might be some custom additional CSS you use on your pages, but glad to hear you’ve managed to cope with it. As for the +/- button replacing Bootstrap’s default arrow in collapsible mode, you can check the following data attribute:
http://www.smartmenus.org/docs/#data-sm-skip-collapsible-behavior
which allows you to revert to Bootstrap’s default behavior.
