Refresh does not work in a shopping cart

Hi,
I have a shopping cart, I add items, I open a shopping cart, so you can not add items or remove items. While everything looks successful, nothing will happen. After the crtl + shift + r key is pressed, the page will be refreshed and changes will appear in the shopping cart.
The system is Opencart 3.0.2.0, but the bug will be in the template.

thank you very much for your help