When a user has only one supplying facility assigned, then after clicking Search the "Supplying facility" field is automatically filled on the Manage Proof of Delivery screen.
Log in as divo1 and go to Orders > Manage Proof of Delivery.
Select Requesting Facility (e.g. Depósito Distrital Cuamba) and Program.
Click the Search button.
The Supplying facility field is automatically selected.
The field shouldn't be populated automatically.
Note: This does not happen when there are at least two supplying facilities to choose from.