Flashing layer

[applibs]

I see that in code is:

// If there is only a slide, clone it
            if (total_slides == 1) {
                var clone = getSlide(0);
                var prepend = SLIDER.find(CRELLY).find(SLIDES);
                clone.clone().prependTo(prepend);
                total_slides++;
            }

Why is slide copied when its only one?
When I comment it, my text layer still flashing.
Why?