Product image and URL don't switch when selecting different variants

Hello! I have multiple variants for many of my products. When I’m on a product page and I try switch between the different variants, the image and the URL don’t change.

I have made sure each variant has an associated image when setting up the products.

Some observations:

  • sometimes it works fine starting from beginning. To reproduce the bug you have to try several times (maybe on several multi-variant products. You have to go to the Catalogue tab to find more products)

  • the issue appears when the landing page URL doesn’t contain the suffix ?variant=… in the end of the link. For some reasons sometimes I land to the page with suffix (which corresponds to the default variant), sometimes without suffix.

  • refreshing the product page could resolve the issue. But not always. In some cases 2-5 refreshing are necessary. The number of refreshing is really random.

  • looks like the mobile version works fine, the issue is only in desktop version

    Here is a link to one of multi-variant product pages : https://innomonde.com/products/1-pair-led-lightsaber-chopsticks-luminous-reusable-kitchen-light-up-led-chopstick-glowing-bpa-free-food-safe-chopsticks

    Shopify theme: Martify

    I would appreciate any help. Thanks in advance.
    Kind regards