iOS Build icon different from App Ico

I recently submit the iOS build (through Product - > archive). I put all App Icon in Assets.xcassets file and upload to Apple store successfully. However, the iOS Build icon is different from the App Icons in Assets.xcassets file. I asked Apple support and they told that this is due to App Icon not showing up in the Assets.xcassets file in the Build ?

This is strange that all the previous builds did not have this problem, and we did not change anything in the Asssets.xcassets since then. Only one thing is we recently upgrade Xcode to Version 10.1 (10B61) from Xcode 9.4. Does anyone experience this problem ?