Thumbnail is adding an additional number and last thumb does not show

[timothymarois]

Something is just not right here,

first, the last thumb won't show on larger screens, shrink the screen and it appears,
and second, it is adding an additional thumbnail that is just a number and no image, does not match the list items. Can't find a way to remove it.

You can see it on the 4th item.

Code I'm using:

$("#lightSlider").lightSlider({
            item: 1,
            autoWidth: true,
            // slideMove: 1, 
            // slideMargin: 10,
            slideMargin: 0,

            addClass: '',
            mode: "slide",
            useCSS: true,
            cssEasing: 'ease', 
            easing: 'linear',
    
            speed: 400,
            auto: false,
            loop: false,
            slideEndAnimation: true,
            pause: 2000,
    
            // keyPress: false,
            // controls: true,
            // prevHtml: '',
            // nextHtml: '',
    
            // rtl:false,
            adaptiveHeight:true,
    
            // vertical:false,
            // verticalHeight:500,
            // vThumbWidth:200,
    
            thumbItem:6,
            pager: true,
            gallery: true,
            // galleryMargin: 5,
            // thumbMargin: 5,
            currentPagerPosition: 'left',
    
            enableTouch:false,
            enableDrag:false,
            freeMove:false,
            // swipeThreshold: 40,
            // responsive : [],
    
            // onBeforeStart: function (el) {},
            // onSliderLoad: function (el) {},
            // onBeforeSlide: function (el) {},
            // onAfterSlide: function (el) {},
            // onBeforeNextSlide: function (el) {},
            // onBeforePrevSlide: function (el) {},

            onSliderLoad: function(el) {
                el.lightGallery({
                    selector: '#lightSlider .lslide' // only #imageGallery .lslide will be added in to the lightGallery
                });
            }   
        });

Even if I just do 1 image, it still adds a second thumb called 2

[timothymarois]

After testing, seems related to using autoWidth : true setting