Steps:

1. Go to product listing page/product page.
2. Go to Cart.
3. Click Continue shopping button.

Result: Nothing happens.

Expected: Continue shopping button should redirect to the last viewed product or product list (depending on what was last viewed)

Note:
'Continue shopping' button at summary page redirects user to cart with an error 404 Not found with message: 

Could not find 'Ibexa\Cart\Value\Cart' with identifier 'e2b38e6d-90d3-4b56-9da0-8bf51ed7f8b9'