Thanks,
Exactly the same effect with data switched off on both News and Weather, the app starts to open and the wheel turns and then it shoots back to the start screen and never gets to the point of noticing that there is no Internet. All other non-Microsoft apps work normally such as Accuweather which updates itself and opens normally.
Maybe, or maybe not related I am getting frequent messages on the phone saying that a restart is needed because software has been downloaded. I can't see what might have been downloaded and am still on the same version of Windows 10 Mobile, 14393.67 Oddly enough I never had any of these problems prior to the Anniversary edition and I think that it only started with the most recent update to .67.
I'm pretty sure that it is Windows related as everything else is working normally and all other apps work as expected. My phone is a Lumia 640 DS LTE
Mike