Hi,
just want to open that issue here to share it with the community. (You already wrote in comments, that you’re working on this issue.)
Let me know if I can help you, e.g. by testing.
I’m using PrestaShop 1.7.2 with Warehouse Theme: https://baufun.shop
I also use the pretty url and onepage checkout module (perhaps this can be relevant)
At the moment, if cache is enabled, the basket widget does not show the right products or cost summery. You need to reload the page. Even in BO “Warenkorb” is tagged as a dynamic module.
Regards,
Andy