I have problem with Identity 3 in our asp.net core application. We use "standard" sign in:
var result = await _loginManager.PasswordSignInAsync(model.UserName, model.Password, false, lockoutOnFailure: false);
The result is Ok and the cookie is set in the browser and everyting looks correct but with Internet Explorer the authoriozation doesn't work on following calls to the app, the user is redirected to the loginpage again. In Chrome it works fine.