Cart autoupdate in Front office not work after update from 1.7.7.4 to 1.7.8.0

[IvicaB]

Cart autoupdate in Front office not work when I add product. Every time must refresh with F5. I'm using native prestashop theme, php 7.4, not using prestashop cache. I see product added to cart in front office after I manually refresh Chrome. In BO I see added product and I see this cart. But in front office I can't see till refresh the page by ctrl F5. Language is only Serbian, and currency is only RSD. I upload module shopping cart from installation ver 1.7.8.0., upload theme, but still nothing.

My webshop is https://trznicentar9402.com/

Any help?