Hi Tommy,More recently, we have fixed some other issues in this area. You can see the details at Bug fix release notes for Adobe Experience Manager Mobile . So, I would recommend building the app with latest release build (2019.5) and try with latest release preflight app(2019.5).Still if you face issue then we would need some details(Publication Id, etc). I suggest you to reach out support and log an official issue so people can allocate some time to investigate this problem.Thanks,Aman Kansal