App crashed in iOS9 which archived and uploaded by Xcode10

Originator:gaoyongyue
Number:rdar://44632282 Date Originated:09/19/2018
Status:Open Resolved:No
Product:Xcode Product Version:10.0(10A255)
Classification:Serious Bug Reproducible:Always
 
We found that our app will crash in iOS9.0~iOS9.2.1, which was archived and uploaded by Xcode GM(10A254a).

According to the crashlogs, app may crash randomly and unexpected when invoking some specified APIs from system frameworks, such as CFNetwork, UIKit, etc.,

We tried to debug with an iOS9.1 device but everything is OK, however that issue will be reproduced if running app downloaded from AppStore and TestFlight. 

We have also tried to archive with the released Xcode version(10.0, 10A255) but nothing work.

Really don't know what exactly cause crash. Sometime app will crash when click tabbar item, but sometime not. There is not any particular steps to reproduct that issue.

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