Cursor should go into barcode field when opening check-in or end session

How to reproduce:
a) The operator clicks on the app button "check in".
Or
b) The operator ends a check-in session by clicking on the "end session" button.

Expected result: The software should place the cursor into the barcode field so that the operator can start scanning barcodes (or manually typing in barcodes) of items to be returned.
Actual result: There is no cursor. This forces the operator to manually place the cursor into the barcode field.