Shipment status changes after editing line item qty of order

Description

Steps to reproduce:

1. Go to the CommerceManager site.
2. Create a new order.
3. Add a line item A (out of stock, backorder available) + line item B (stock available).
4. Add a payment.
   --> See that: "Status: Shipment cannot be released: One or more items do not have enough inventory." and "Release Shipment" button is disabled --> CORRECT
5. Edit the quantity of line item B then add payment --> Save order.

Expected:
Keep status as above.

Actual:
"Status:Inventory Assigned" and Release button is enabled.