Remote Config crash editor every time

Start at FirebaseRemoteConfig.DefaultInstance and the Firebase.Platform.FirebaseAppUtils:PollCallbacks stack shown in the Editor Crash Log. Reproduce the crash with Unity 2020.3.48f1 and Firebase Unity SDK 11.5.0 without a VPN, then determine whether the failure is in this quickstart or the Firebase Unity SDK. Done means the cause is identified and the editor no longer crashes under the reported network conditions.

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.3.48f1
• Firebase Unity SDK version: 11.5.0
• Source you installed the SDK: FirebaseAnalytics.unitypackage
• Problematic Firebase Component: RemoteConfig in Editor
• Other Firebase Components in use: Analytics, Crashlytics
• Additional SDKs you are using: Facebook, Facebook, ApplovinMax, Appsflyer, Appmetrica, AudienceNetwork, ExternalDependencyManager, GoogleMobileAds
• Platform you are using the Unity editor on: Windows
• Platform you are targeting: Android
• Scripting Runtime: IL2CPP

[REQUIRED] Please describe the issue here:

Every time I launch the editor in Eastern Europe (Eastern Ukraine), I get a editor crash. This may be due to the fact that Google services are partially limited and internet has high latency. But every time I call FirebaseRemoteConfig.DefaultInstance I get an editor crash.

If i enable VPN, everything works correctly.

Steps to reproduce:

1. Start editor without VPN, on East Europe (Eastern Ukraine).
2. Start FirebaseRemoteConfig.DefaultInstance
3. Crash

FirebaseRemoteConfig.DefaultInstance.SetDefaultsAsync calls from Start method of other monobehaviour.

All code from documentation Remote Config Get Started
https://firebase.google.com/docs/remote-config/get-started?platform=unity

Relevant Code:

FirebaseRemoteConfig.DefaultInstance.SetDefaultsAsync(_defaultValues).ContinueWithOnMainThread(task =>
        {
            Print.Log("RemoteConfig -> Firebase Remote Config Default values setted.");
        });

        FetchDataAsync();

Editor Log
Editor Crash Log.txt

ERROR: flatbuffers::Parser::Parse() failed: (1, 1): error: illegal character: <
Crash!!!
SymInit: Symbol-SearchPath: 'D:/Unity/Editors/2020.3.48f1/Editor/Data/Mono;.;D:\Unity\Projects\ArrowThrower;D:\Unity\Editors\2020.3.48f1\Editor;C:\Windows;C:\Windows\system32;', symOptions: 534, UserName: 'Yaroslav'
OS-Version: 10.0.0
D:\Unity\Editors\2020.3.48f1\Editor\Unity.exe:Unity.exe (00007FF686440000), size: 84131840 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 2020.3.48.1457
C:\Windows\SYSTEM32\ntdll.dll:ntdll.dll (00007FF84E030000), size: 2064384 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.4355
C:\Windows\System32\KERNEL32.DLL:KERNEL32.DLL (00007FF84CE90000), size: 774144 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.3636
C:\Windows\System32\KERNELBASE.dll:KERNELBASE.dll (00007FF84BA00000), size: 3104768 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.4355
C:\Windows\System32\CRYPT32.dll:CRYPT32.dll (00007FF84BD50000), size: 1433600 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.4412
C:\Windows\System32\ucrtbase.dll:ucrtbase.dll (00007FF84B870000), size: 1048576 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.3636
C:\Windows\System32\USER32.dll:USER32.dll (00007FF84C480000), size: 1699840 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.4355
C:\Windows\System32\win32u.dll:win32u.dll (00007FF84C030000), size: 139264 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.4412
C:\Windows\System32\GDI32.dll:GDI32.dll (00007FF84DDF0000), size: 176128 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.19041.3996
flatbuffers::Parser::Parse() failed: (1, 1): error: illegal character: <
UnityEngine.StackTraceUtility:ExtractStackTrace ()
UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
UnityEngine.Logger:Log (UnityEngine.LogType,object)
UnityEngine.Debug:LogError (object)
Firebase.Platform.FirebaseLogger:LogMessage (Firebase.Platform.PlatformLogLevel,string)
Firebase.LogUtil:LogMessage (Firebase.LogLevel,string)
Firebase.LogUtil:LogMessageFromCallback (Firebase.LogLevel,string)
Firebase.AppUtil:PollCallbacks ()
Firebase.Platform.FirebaseAppUtils:PollCallbacks ()
Firebase.Platform.FirebaseHandler:Update ()
Firebase.Platform.FirebaseMonoBehaviour:Update ()