3656802 - Custom field with F4 help does not retain selected value in app Create Supplier Invoice - Advanced

When populating a custom field of type "Code List based on CDS View" via F4 help in app Create Supplier Invoice - Advanced (MIRO), the custom field does not retain the value selected via F4 help. 

SAP S/4HANA Cloud Public Edition

1. Create a custom field of type "Code List based on CDS View" for business context Procurement: Supplier Invoice (MM_SI_HEADER).
2. Execute app Create Supplier Invoice - Advanced (MIRO), go to the Custom Field tab and fill this custom field with a value selected via F4 help.
3. The custom field is cleared and the selected value is not retained.

This is a known program error. 

The issue will be fixed in 2602 main release. 

The fiori app "Create Supplier Invoice" can be used as work around. Here it works fine.

Custom field, F4 help, Code List based on CDS View, Create Supplier Invoice, Create Supplier Invoice - Advanced, MIRO, extensibility , KBA , MM-FIO-IV-2CL , Fiori UI for Invoice Verification (Public Cloud) , Problem