First image of carousel not showing with snap-scroll

[Dodo]

Hello there,

Thanks for Laytheme. We love it.

We have several carousels on our page. Each row contains a carousel and has the full vh.
http://jacobwyss.com/websitelaunchcomingsoon90/

Ive added Snap-Scroll in the custom CSS and it works, BUT...

.grid-inner{
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    height: 100vh;
}

.row{
    scroll-snap-align: start;
    scroll-snap-stop: normal;
}

After the second carousel in the following carousels, its first image is not showing although the rest of the carousel is working.

Is it a carousel bug?
Can you give me any advice?

Thanks for help,
Best JJ