cart-bubble-number disappears while scrolling down

[crptcl]

in menu the cart shows 3 items in my cart with attending to scroll down the bubble and the number disappears.

https://www.crptcl.com/

shop pw 128383838292

put something in cart and scroll down for better understanding in mainmenu. 

watch the bubble and number next to cart symbol disappearing while scrolling down.

[crptcl]

https://www.crptcl.com/

shop pw 128383838292

put something in cart and scroll down for better understanding in mainmenu. 

watch the bubble and number next to cart symbol disappearing while scrolling down.