When you mentioned Testflight I thought you might be a Beta tester. Your firmware confirms that, it is a Beta version. That’s one of the problems with saying ‘latest versions’. Latest production? Latest Beta? Latest an old phone can load? Numbers are way better, lol. 
Anyway, you should post this issue in the announcement thread for either the Beta app or Beta firmware, it shouldn’t be out in the production area. Since you tried several different Beta apps, it should probably be posted in the Beta firmware thread. For your firmware that would be the link below.
If you need to correct it right away (and probably a good test to prove it is the firmware), you can manually downgrade to the current production version using the 4.36.9.139 downloadable file to use with the SD card procedure on the second link: