Remote config returning empty values

[adrianortuzar]

Hi, we are realising that ours customers that transferred their data from a previous iPhone device to a new iPhone (more info here https://support.apple.com/en-us/HT210216) our app is not working correctly.

We reproduce the issue and all the values from Remote Config are empty.

To solve the issue we have to ask ours customers to remove the app and install it again. What is not nice. Could you please take a look the issue and let us know how to solve it? Thanks

We are using those versions from Firebase:

- Crashlytics (3.12.0):
    - Fabric (~> 1.9.0)
  - Fabric (1.9.0)
  - Firebase (6.12.0):
    - Firebase/Core (= 6.12.0)
  - Firebase/Core (6.12.0):
    - Firebase/CoreOnly
    - FirebaseAnalytics (= 6.1.5)
  - Firebase/CoreOnly (6.12.0):
    - FirebaseCore (= 6.3.3)
  - Firebase/Messaging (6.12.0):
    - Firebase/CoreOnly
    - FirebaseMessaging (~> 4.1.8)
  - Firebase/Performance (6.12.0):
    - Firebase/CoreOnly
    - FirebasePerformance (~> 3.1.6)
  - Firebase/RemoteConfig (6.12.0):
    - Firebase/CoreOnly
    - FirebaseRemoteConfig (~> 4.4.4)
  - FirebaseABTesting (3.1.2):
    - FirebaseAnalyticsInterop (~> 1.3)
    - FirebaseCore (~> 6.1)
    - Protobuf (>= 3.9.2, ~> 3.9)
  - FirebaseAnalytics (6.1.5):
    - FirebaseCore (~> 6.3)
    - FirebaseInstanceID (~> 4.2)
    - GoogleAppMeasurement (= 6.1.5)
    - GoogleUtilities/AppDelegateSwizzler (~> 6.0)
    - GoogleUtilities/MethodSwizzler (~> 6.0)
    - GoogleUtilities/Network (~> 6.0)
    - "GoogleUtilities/NSData+zlib (~> 6.0)"
    - nanopb (= 0.3.9011)
  - FirebaseAnalyticsInterop (1.4.0)
  - FirebaseCore (6.3.3):
    - FirebaseCoreDiagnostics (~> 1.0)
    - FirebaseCoreDiagnosticsInterop (~> 1.0)
    - GoogleUtilities/Environment (~> 6.2)
    - GoogleUtilities/Logger (~> 6.2)
  - FirebaseCoreDiagnostics (1.1.2):
    - FirebaseCoreDiagnosticsInterop (~> 1.0)
    - GoogleDataTransportCCTSupport (~> 1.0)
    - GoogleUtilities/Environment (~> 6.2)
    - GoogleUtilities/Logger (~> 6.2)
    - nanopb (~> 0.3.901)
  - FirebaseCoreDiagnosticsInterop (1.1.0)
  - FirebaseInstanceID (4.2.7):
    - FirebaseCore (~> 6.0)
    - GoogleUtilities/Environment (~> 6.0)
    - GoogleUtilities/UserDefaults (~> 6.0)
  - FirebaseMessaging (4.1.10):
    - FirebaseAnalyticsInterop (~> 1.3)
    - FirebaseCore (~> 6.2)
    - FirebaseInstanceID (~> 4.1)
    - GoogleUtilities/AppDelegateSwizzler (~> 6.2)
    - GoogleUtilities/Environment (~> 6.2)
    - GoogleUtilities/Reachability (~> 6.2)
    - GoogleUtilities/UserDefaults (~> 6.2)
    - Protobuf (>= 3.9.2, ~> 3.9)
  - FirebasePerformance (3.1.6):
    - FirebaseCore (~> 6.3)
    - FirebaseInstanceID (~> 4.2)
    - FirebaseRemoteConfig (~> 4.4)
    - GoogleToolboxForMac/Logger (~> 2.1)
    - "GoogleToolboxForMac/NSData+zlib (~> 2.1)"
    - GoogleUtilities/Environment (~> 6.2)
    - GoogleUtilities/ISASwizzler (~> 6.2)
    - GoogleUtilities/MethodSwizzler (~> 6.2)
    - GTMSessionFetcher/Core (~> 1.1)
    - Protobuf (~> 3.9)
  - FirebaseRemoteConfig (4.4.6):
    - FirebaseABTesting (~> 3.1)
    - FirebaseAnalyticsInterop (~> 1.4)
    - FirebaseCore (~> 6.2)
    - FirebaseInstanceID (~> 4.2)

[rizafran]

@adrianortuzar, looks like your issue is related to this #4677.

[rizafran]

Hi @adrianortuzar. thanks for reporting this issue. I have filed this internally (b/148386739) and I'll let you know once I have an update.

[dmandar]

This is similar to #4677. Please follow progress on that thread.