Microsoft Account Authentication - AuthenticationManager.GetExternalLoginInfoAsync() always null - asp.net-mvc

Question

I have created a MVC web application and trying to use Microsoft Account authentication.
I have created the App on https://apps.dev.microsoft.com
After obtaining the App-ID and App-Secret I pasted both in my web.config
In my StartupAuth.cs I have configured Microsoft authentication with this code snippet:
var microsoftOptions = new MicrosoftAccountAuthenticationOptions()
{
ClientId = Config.MSAppId,
ClientSecret = Config.MSAppSecret,
};
app.UseMicrosoftAccountAuthentication(microsoftOptions);
It is possible to authenticate with my Windows account
In the account controller I am trying to create the account from data returned from the authentication provider. The snippet below only shows the important part.
public async Task<ActionResult> ExternalLoginCallback(string returnUrl)
{
var userName = string.Empty;
var eMail = string.Empty;
var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();
if (loginInfo == null)
{
return RedirectToAction("Index", "Home");
}
// Benutzer mit diesem externen Anmeldeanbieter anmelden, wenn der Benutzer bereits eine Anmeldung besitzt
var result = await SignInManager.ExternalSignInAsync(loginInfo, isPersistent: false);
...
await AuthenticationManager.GetExternalLoginInfoAsync() always returns null.
The configuration in the developer portal looks like this:
I have tried to add scopes for e-mail and basic information, but this seems to be deprecated and the authentication page shows an error.
In the debug console in Visual Studio I get the following error:
Microsoft.Owin.Security.MicrosoftAccount.MicrosoftAccountAuthenticationMiddleware Error: 0 : Authentication failed
System.Net.Http.HttpRequestException: Der Antwortstatuscode gibt keinen Erfolg an: 400 (Bad Request).
bei System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
bei Microsoft.Owin.Security.MicrosoftAccount.MicrosoftAccountAuthenticationHandler.d__4.MoveNext()
I have created a clean test project from scratch, to find out what the cause for the problem is. This is what I have found out:
After the initial configuration of the authentication all Microsoft.Owin.Security.* components are on Version 3.0.1 and Microsoft Account authentication (not Windows Azure authentication - this is not part of the problem) works fine
After updating Microsoft.Owin.Security.* to Version 3.1.0 some changes happen with Microsoft Account authentication. The logon experience changes. After clicking he login button, it redirects to the azure logon experience, unlike before, where I was redirected directly to the Microsoft Account logon experience and authentication stops working.
After this I left all Microsoft.Owin.Security.* components on Version 3.1.0 and downgraded Microsoft.Owin.Security.MicrosoftAccount back to 3.0.1. And voila, I got the "old" logon experience back, with the result, that authentication worked again.
The Problem must be in Microsoft.Owin.Security.MicrosoftAccount.
Does anyone know - except from using Version 3.0.1 - how to solve the issue or is this a problem for Microsoft support?