If your screenshot is from our live website, then yes it does work because that is using my own version of the cart code so it works to an extent, but with this live example, the ajax cart update doesn’t initiate on cart additions.
On my test site, which uses the shortcode et_top_cart, this (YT link) shows you what happens. The cart disappears as something on the site is deleting the cart code from the DOM.
I provided access and login details to my dev website which again has the et_top_cart shortcode in place with the minimum plugins activated to show this isn’t a plugin conflict.