iMessage App doesn't work if user installs app before updating to iOS 10

Originator:poppoppop
Number:rdar://28351693 Date Originated:17-Sep-2016 07:31 PM
Status:Closed as Duplicate of 27637951 Resolved:
Product:iOS Product Version:10.0.1
Classification:Serious Bug Reproducible:Always
 
Summary:
If an app has a bundled iMessage app and the user installs it before updating the iOS 10, the iMessage app doesn’t work.

Steps to Reproduce:
1) Install or update an app that includes an iMessage app on iOS 9
2) Update phone to iOS 10
3) Launch iMessage
4) Add the iMessage app to the drawer and tap its icon to launch it

Expected Results:
The iMessage app launches

Actual Results:
The iMessage app fails to launch, there is just a blank screen with the app icon in the middle

Regression:
Reported by users on many devices, verified on an iPhone 5S

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