这个问题通常是因为登录第一次时，ABP还没有生成认证cookie，所以会导致登录失败。解决方法是在登录失败后再次调用登录方法即可。以下是一个代码示例：

public async Task Login(LoginViewModel loginModel, string returnUrl = "")
{
    var loginResult = await _signInManager.PasswordSignInAsync(
        loginModel.UsernameOrEmailAddress,
        loginModel.Password,
        loginModel.RememberMe,
        true
    );

    if (loginResult == AbpLoginResultType.Success)
    {
        await _authenticationManager.SignInAsync(await GetIdentityAsync(loginModel.UsernameOrEmailAddress, loginModel.Password, false), loginModel.RememberMe);
    }
    else if (loginResult == AbpLoginResultType.UserIsNotActive)
    {
        return RedirectToAction("Login", new { returnUrl = returnUrl });
    }
    else
    {
        // If login fails for the first time, try again
        loginResult = await _signInManager.PasswordSignInAsync(
            loginModel.UsernameOrEmailAddress,
            loginModel.Password,
            loginModel.RememberMe,
            true
        );

        if (loginResult == AbpLoginResultType.Success)
        {
            await _authenticationManager.SignInAsync(await GetIdentityAsync(loginModel.UsernameOrEmailAddress, loginModel.Password, false), loginModel.RememberMe);
        }
        else if (loginResult == AbpLoginResultType.UserIsNotActive)
        {
            return RedirectToAction("Login", new { returnUrl = returnUrl });
        }
        else
        {
            return RedirectToAction("Login", new { returnUrl = returnUrl });
        }
    }

    return RedirectToLocal(returnUrl);
}