Hi,
That's really strange. It might be linked to a browser caching issue.
Let's try this:
- create an order with the Chrome browser
- before adding the products, open the developer tools, and under the "network" tab, check on the "disable cache" option.
- while keeping the developer tools window open, try again to add the products.
If you don't have the problem, it means that it is a browser caching issue probably triggered by an extension or something on your server.
In that case, it's not really a problematic as it means that the modification is taken into account. You just don't see it until you refresh.