Slick Slider Width 0 On Initial Page Load

Question

I'm running into a really weird issue with a Slick Slider.

Sometimes, on the very first page load the slide and track width are being set to 0.

I've tried many of the solutions out there including:

• Setting a timeout and then calling slick
• Triggering a window resize event via JS
• Setting min-height of all slick elements to 1
• Putting the images in a div container

I can't for the life of me figure out how to fix this issue. Any help would be greatly appreciated!

Live example (any product page)

jQuery

    // Slick Slider on Product Page
    $('.slick-carousel').slick({
        slidesToShow: 1,
        slidesToScroll: 1,
        lazyLoad: 'ondemand',
        arrows: false,
        fade: true,
        asNavFor: '.slick-thumbnails'
    });
    $('.slick-thumbnails').slick({
        slidesToShow: 4,
        slidesToScroll: 1,
        asNavFor: '.slick-carousel',
        focusOnSelect: true,
        arrows: false,
        mobileFirst: true,
        responsive: [{
            breakpoint: 768,
            settings: {
                vertical: true
            }
        }]
    });

HTML (Bootstrap 4)

<div class="col-12 col-md-10 col-lg-8 mx-auto order-1 order-md-2 slick-carousel">
  <div>
    <img class="img-fluid" src="{{ image.src | img_url: '1024x1024' }}" alt="{{ image.alt | escape }}" onload="$(window).trigger('resize')"/>
  </div>
</div>

CSS

.slick-thumbnail-container {
    * {
        min-height:0;
    }

    flex-direction: row;
    padding: 2rem 0;

    .icon {
        font-size: 1.25rem;
        color: $gray-light;
    }
}

.slick-thumbnails {

    * {
        min-height:0;
    }

    .slick-slide {
        margin: 0 12px;
    }

    .slick-list {
        margin: 0 -12px;
    }
}

@include media-breakpoint-up(md) {

    .product-description-container {
        padding: 2rem;
        border-radius: $border-radius;
        margin: 3rem auto 4rem;

        .add-to-cart {
            width: auto;
        }
    }

    .slick-thumbnail-container {

        * {
            min-height:0;
        }

        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;

    }

    .slick-thumbnails {

        * {
            min-height:0;
        }

        .slick-slide {
            margin: 12px 0;
        }

        .slick-list {
            margin: -12px 0;
        }
    }

    .slick-carousel {

        * {
            min-height:0;
        }

        display: flex;
        align-items: center;
        padding: 1rem 0 4rem;
        justify-content: center;
        width: 100%;
        max-height: 100%;

    }

}

Answer 1

Have you tried to run one of these commands on the slick

$('.slider-class').slick('setPosition').slick();

or

$('.slider-class').slick('destroy').slick();

or

$('.slider-class').slick('unslick').slick();

or

$('.slider-class').slick('unslick').slick('reinit').slick();

or

$('.slider-class').on('init', function(event, slick){
  console.log("initialised")
  $('.slider-class').slick()
});

or maybe checking if the slick-initialized class is on the slider and then calling $('.slider-class').slick()

I hope you find your solution. :)