Reports

I am able to resolve it, but not in a manner that I'm extremely satisfied with.

I've replaced the following

.AddMicrosoftAccount(options =>
    {
        options.ClientId = aadConfig.ClientId;
        options.ClientSecret = aadConfig.ClientSecret;
        options.AuthorizationEndpoint = aadConfig.AuthorityEndpoint;
        options.TokenEndpoint = aadConfig.TokenEndpoint;
    })

With this, this somehow resolves it.

AddOpenIdConnect("Microsoft", options =>
    {
        options.Authority = aadConfig.Authority;
        options.ClientId = aadConfig.ClientId;
        options.ClientSecret = aadConfig.ClientSecret;
        options.ResponseType = OpenIdConnectResponseType.Code;
        options.SaveTokens = true;
        options.GetClaimsFromUserInfoEndpoint = true;
        options.MapInboundClaims = false;
        options.TokenValidationParameters.NameClaimType = JwtRegisteredClaimNames.Name;
    })

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