If you click the Add Shortcut button, a dialog will pop-up on which you can add your home screen shortcut, but when you save it and click the Add Shortcut button again, the Add Shortcut dialog is still there. It should have been Update Dialog. In order to fix this, you have to navigate back then open the selected application again and re-execute the GetShortcut() function.
https://github.com/JackEblan/Geto/blob/0a77dd35c190b830c84e0ac3c29210fdf4d00fa7/feature/app-settings/src/main/kotlin/com/android/geto/feature/appsettings/AppSettingsScreen.kt#L360
If you click the Add Shortcut button, a dialog will pop-up on which you can add your home screen shortcut, but when you save it and click the Add Shortcut button again, the Add Shortcut dialog is still there. It should have been Update Dialog. In order to fix this, you have to navigate back then open the selected application again and re-execute the GetShortcut() function.