UIPopoverPresentationController : ActionSheet position at barButtonItem (iPad)

Question

I have an UIAlertController (UIAlertControllerStyleActionSheet) on iPhone which now should be presented in a UIPopoverPresentationController on the iPad version..

I am doing the following:

UIPopoverPresentationController *popover = sectionActionSheet.popoverPresentationController;
if (popover){
    popover.sourceView = self.view;
    popover.barButtonItem = menuButton;
    popover.permittedArrowDirections = UIPopoverArrowDirectionAny;
}

Unfortunately the position of the popover (in relation to the UIBarButton) is not so nice and if I rotate the device the popover is not repositioned:

Corner not centered:

After rotate:

Airhead