https://userapps.support.sap.com/sap/support/knowledge/en/3578237
3578237 - SAP Screen Personas Flavor for EWM_MOBGUI is Only applied After Resizing | SAP Knowledge...
The flavor of SAP Screen Personas applications is only applied correctly after resizing. This issue was encountered while using SAP S/4HANA 2021 with Personas...