1. Add product to cart with default quantity 1 in the storefront
2. Enter main cart
3. Try to enter manually different quantity (or with the use of spinner button) in the cart line.

Result:

The new value is reseted to 1, is not saved and order value is not updated.

https://www.loom.com/share/dbd664ddd80c4fa2b4dcde8f5173aba9?sid=8b6e7874-3f01-4ed4-b101-297692b1cf29