Advanced stock management does not seemd to work even in demo.prestashop.com/
1. Turn on Adv Stock management. Setup warehouses, carriers
2. Set Advanced stock management for all desired produtcs
3. Set warehouses and suppliers for that products
4. Create Supply order, pass all the process step-by-step
5. Get still empty warehouse and 0 as product quantity.
Initially we have 0 products in stock, and expecting them to got increased via the ordering process, as supply order passes 1-2-3-5 statuses while setting the required quantities
For brand new clean install PS 220.127.116.11 and for demo.prestashop.com the same.