iOS App Crashes after install but not when running from Xcode

I have an odd issue I'm trying to troubleshoot. I have an app that is deployed to our enterprise and works on almost all of our devices.

Lately, I have devices (very small number) where the app installs from our MDM and it crashes upon launch, it does not get past the launch screen. If I remove and reinstall the app from the MDM it still crashes.

I decided to put the devices in developer mode and if I run the App from Xcode on the device it works fine. If I stop it and run it right from the device it also works.

If I do a final build of the app and install it using "Devices and Simulators", the app crashes upon launch.

Using "Devices and Simulators" I check for crash log for the app and no file.

I am stumped as to whats going on.

iOS App Crashes after install but not when running from Xcode
 
 
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