one addition to this topic: There’s a workaround for your use case so you can translate the title of the screen shown in the header bar. You can insert a sap.m.Bar or sap.m.Toolbar into the customHeader aggregation of your screen and then add a sap.m.Title and a sap.m.Button for the back navigation to mimic the behavior of the screen properties. By using this approach you will be able to translate the screen titles in the PO files as usual.
