If some groups only have one item or none and the user scrolls up and down the list fast and then returns to the top of the list, it can sometimes cause some the groups to still have the class of ioslist-animated applied to them meaning that the headers overlap each other.
Adding this to the bottom of testPosition seems to fix it:
if( currentTop == 0 )
$(this.options.selectors.groupContainer).removeClass(this.options.classes.animated);
If some groups only have one item or none and the user scrolls up and down the list fast and then returns to the top of the list, it can sometimes cause some the groups to still have the class of
ioslist-animatedapplied to them meaning that the headers overlap each other.Adding this to the bottom of
testPositionseems to fix it: